OSRS Potion Arbitrage Calculator - Find Profitable Decanting & Combining Opportunities

Discover profitable OSRS potion decanting and combining arbitrage opportunities with real-time Grand Exchange data. Our advanced calculator identifies profitable dose conversions - split high-dose potions into multiple lower doses or combine lower doses into higher concentrations to maximize your GP per hour through strategic potion arbitrage trading.

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Risk analysis included

Data loaded: 83 potions analyzed (Updated: 11:20:13 PM)

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Decanting Arbitrage Opportunities

Buy high-dose potions, decant and sell low-dose potions for profit

Potion Name	Operation & Price	Profit(After 1% GE Tax)	Margin	Risk	1-dose	2-dose	3-dose	4-dose
Goading potion(30146)	33×1 Buy 1x 3-dose @ 40,512 GP Sell 3x 1-dose @ 16,991 GP Expected: +9,951 GP each	+88,666 GP Est. Vol: 9 × 0.99 9 × 9,951 = 88,666	+24.6%	High Risk	Vol: 27 Buy: 16,991 Sell: 15,125 32m ago	Vol: 168 Buy: 32,500 Sell: 29,758 18m ago	Vol: 1,113 Buy: 43,871 Sell: 40,512 4m ago	Vol: 11,344 Buy: 61,000 Sell: 58,850 Just now
Divine battlemage potion(24632)	33×1 Buy 1x 3-dose @ 9,600 GP Sell 3x 1-dose @ 5,504 GP Expected: +6,747 GP each	+13,359 GP Est. Vol: 2 × 0.99 2 × 6,747 = 13,359	+70.3%	High Risk	Vol: 6 Buy: 5,504 Sell: 2,055 2h ago	Vol: 20 Buy: 10,056 Sell: 7,800 33m ago	Vol: 34 Buy: 9,977 Sell: 9,600 26m ago	Vol: 4,176 Buy: 18,000 Sell: 17,052 19m ago
Sanfew serum(10931)	44×1 Buy 1x 4-dose @ 21,492 GP Sell 4x 1-dose @ 6,935 GP Expected: +5,971 GP each	+199,493 GP Est. Vol: 34 × 0.99 34 × 5,971 = 199,493	+27.8%	Medium Risk	Vol: 135 Buy: 6,935 Sell: 4,800 13m ago	Vol: 224 Buy: 9,915 Sell: 9,915 Just now	Vol: 506 Buy: 17,500 Sell: 15,500 3m ago	Vol: 169,438 Buy: 21,740 Sell: 21,492 Just now
Prayer regeneration potion(30134)	22×1 Buy 1x 2-dose @ 33,250 GP Sell 2x 1-dose @ 18,800 GP Expected: +3,974 GP each	+295,070 GP Est. Vol: 75 × 0.99 75 × 3,974 = 295,070	+12.0%	Medium Risk	Vol: 902 Buy: 18,800 Sell: 18,043 Just now	Vol: 75 Buy: 39,999 Sell: 33,250 27m ago	Vol: 4,016 Buy: 57,500 Sell: 56,319 4m ago	Vol: 26,142 Buy: 74,999 Sell: 71,124 Just now
Super antifire potion(21987)	44×1 Buy 1x 4-dose @ 18,071 GP Sell 4x 1-dose @ 5,565 GP Expected: +3,966 GP each	+25,524 GP Est. Vol: 7 × 0.99 7 × 3,966 = 25,524	+21.9%	High Risk	Vol: 26 Buy: 5,565 Sell: 5,565 20m ago	Vol: 13 Buy: 8,408 Sell: 8,029 2h ago	Vol: 164 Buy: 16,000 Sell: 13,388 55m ago	Vol: 11,412 Buy: 18,600 Sell: 18,071 3m ago
Extended super antifire(22218)	44×1 Buy 1x 4-dose @ 19,497 GP Sell 4x 1-dose @ 5,909 GP Expected: +3,903 GP each	+409,543 GP Est. Vol: 106 × 0.99 106 × 3,903 = 409,543	+20.0%	Low Risk	Vol: 424 Buy: 5,909 Sell: 5,628 7m ago	Vol: 1,334 Buy: 10,073 Sell: 8,991 21m ago	Vol: 694 Buy: 15,397 Sell: 14,961 Just now	Vol: 29,201 Buy: 19,497 Sell: 19,497 1m ago
Antidote++(5958)	44×1 Buy 1x 4-dose @ 7,156 GP Sell 4x 1-dose @ 2,689 GP Expected: +3,492 GP each	+1,713,199 GP Est. Vol: 496 × 0.99 496 × 3,492 = 1,713,199	+48.8%	Low Risk	Vol: 1,982 Buy: 2,689 Sell: 1,581 24m ago	Vol: 138 Buy: 3,320 Sell: 3,003 5m ago	Vol: 3,340 Buy: 5,412 Sell: 5,325 2m ago	Vol: 107,693 Buy: 7,602 Sell: 7,156 1m ago
Relicym's balm(4848)	44×1 Buy 1x 4-dose @ 820 GP Sell 4x 1-dose @ 920 GP Expected: +2,823 GP each	+4,891 GP Est. Vol: 2 × 0.99 2 × 2,823 = 4,891	+344.3%	High Risk	Vol: 7 Buy: 920 Sell: 102 45m ago	Vol: 4 Buy: 403 Sell: 264 1h ago	Vol: 2,650 Buy: 598 Sell: 200 1h ago	Vol: 11,221 Buy: 843 Sell: 820 Just now
Forgotten brew(27638)	44×1 Buy 1x 4-dose @ 3,690 GP Sell 4x 1-dose @ 1,532 GP Expected: +2,377 GP each	+635,885 GP Est. Vol: 270 × 0.99 270 × 2,377 = 635,885	+64.4%	Low Risk	Vol: 1,081 Buy: 1,532 Sell: 599 8m ago	Vol: 275 Buy: 1,533 Sell: 1,500 34m ago	Vol: 164 Buy: 3,276 Sell: 3,276 4m ago	Vol: 39,200 Buy: 4,021 Sell: 3,690 1m ago
Bastion potion(22470)	33×1 Buy 1x 3-dose @ 9,800 GP Sell 3x 1-dose @ 4,006 GP Expected: +2,098 GP each	+81,689 GP Est. Vol: 39 × 0.99 39 × 2,098 = 81,689	+21.4%	Medium Risk	Vol: 118 Buy: 4,006 Sell: 3,914 7m ago	Vol: 744 Buy: 8,087 Sell: 6,001 52m ago	Vol: 2,229 Buy: 10,069 Sell: 9,800 30m ago	Vol: 21,999 Buy: 14,789 Sell: 14,500 Just now
Extended anti-venom+(29833)	22×1 Buy 1x 2-dose @ 8,295 GP Sell 2x 1-dose @ 5,238 GP Expected: +2,076 GP each	+2,606,346 GP Est. Vol: 1,268 × 0.99 1,268 × 2,076 = 2,606,346	+25.0%	Low Risk	Vol: 2,747 Buy: 5,238 Sell: 5,049 2m ago	Vol: 1,268 Buy: 8,724 Sell: 8,295 1m ago	Vol: 1,274 Buy: 14,460 Sell: 13,801 1m ago	Vol: 56,164 Buy: 20,000 Sell: 19,800 Just now
Fishing potion(155)	44×1 Buy 1x 4-dose @ 40 GP Sell 4x 1-dose @ 385 GP Expected: +1,485 GP each	+1,470 GP Est. Vol: 1 × 0.99 1 × 1,485 = 1,470	+3711.5%	High Risk	Vol: 4 Buy: 385 Sell: 30 1h ago	Vol: 3 Buy: 13 Sell: 10 6h ago	Vol: 750 Buy: 4 Sell: 5 Just now	Vol: 5,461 Buy: 44 Sell: 40 44m ago
Super energy(3022)	22×1 Buy 1x 2-dose @ 201 GP Sell 2x 1-dose @ 790 GP Expected: +1,363 GP each	+39,137 GP Est. Vol: 29 × 0.99 29 × 1,363 = 39,137	+678.2%	Medium Risk	Vol: 2,029 Buy: 790 Sell: 101 49m ago	Vol: 29 Buy: 1,127 Sell: 201 1h ago	Vol: 80,331 Buy: 1,600 Sell: 1,590 1m ago	Vol: 155,975 Buy: 2,150 Sell: 2,050 1m ago
Anti-venom+(12919)	44×1 Buy 1x 4-dose @ 12,900 GP Sell 4x 1-dose @ 3,598 GP Expected: +1,348 GP each	+697,328 GP Est. Vol: 523 × 0.99 523 × 1,348 = 697,328	+10.5%	Low Risk	Vol: 2,090 Buy: 3,598 Sell: 3,017 6m ago	Vol: 174 Buy: 5,834 Sell: 6,125 7m ago	Vol: 2,622 Buy: 11,000 Sell: 9,926 8m ago	Vol: 58,813 Buy: 12,970 Sell: 12,900 Just now
Anti-venom(12911)	33×1 Buy 1x 3-dose @ 6,600 GP Sell 3x 1-dose @ 2,661 GP Expected: +1,303 GP each	+94,610 GP Est. Vol: 73 × 0.99 73 × 1,303 = 94,610	+19.7%	Medium Risk	Vol: 220 Buy: 2,661 Sell: 2,483 7m ago	Vol: 614 Buy: 3,950 Sell: 4,354 49m ago	Vol: 304 Buy: 7,612 Sell: 6,600 18m ago	Vol: 54,568 Buy: 10,430 Sell: 10,230 Just now
Super combat potion(12701)	44×1 Buy 1x 4-dose @ 11,867 GP Sell 4x 1-dose @ 3,310 GP Expected: +1,241 GP each	+4,139,321 GP Est. Vol: 3,370 × 0.99 3,370 × 1,241 = 4,139,321	+10.5%	Low Risk	Vol: 13,481 Buy: 3,310 Sell: 3,051 Just now	Vol: 16,494 Buy: 6,083 Sell: 5,825 1m ago	Vol: 10,305 Buy: 9,638 Sell: 9,104 2m ago	Vol: 331,638 Buy: 12,000 Sell: 11,867 Just now
Antidote+(5949)	44×1 Buy 1x 4-dose @ 1,500 GP Sell 4x 1-dose @ 655 GP Expected: +1,094 GP each	+6,226 GP Est. Vol: 6 × 0.99 6 × 1,094 = 6,226	+72.9%	High Risk	Vol: 23 Buy: 655 Sell: 1,072 1h ago	Vol: 4 Buy: 1,223 Sell: 851 8h ago	Vol: 12 Buy: 2,016 Sell: 1,003 1h ago	Vol: 5,113 Buy: 1,619 Sell: 1,500 11m ago

Complete Guide to OSRS Potion Arbitrage

What is Potion Arbitrage?

Potion arbitrage in Old School RuneScape (OSRS) is a profitable trading strategy that takes advantage of price differences between different dose levels of the same potion. This method involves buying potions at one dose level and converting them to another dose level to sell for a profit on the Grand Exchange.

There are two main types of potion arbitrage strategies: decanting (splitting high-dose potions into multiple lower doses) and combining (merging multiple low-dose potions into higher concentrations). Both strategies can generate consistent profits when executed correctly with proper market analysis.

Decanting Strategy

Decanting involves purchasing high-dose potions (typically 4-dose) and splitting them into multiple lower-dose potions (usually 1-dose). This strategy works when the combined value of the lower doses exceeds the cost of the high-dose potion.

How it works:

Buy a 4-dose potion from the Grand Exchange at the lowest price
Visit a decanting NPC (like Zahur in Nardah or the Decanter at GE)
Convert the 4-dose potion into four 1-dose potions
Sell the 1-dose potions at a higher combined price

Example: Buy a Super combat potion (4) for 10,000 GP, decant into 4x (1) doses, sell each for 3,000 GP = 12,000 GP revenue - 10,000 GP cost = 2,000 GP profit (minus GE tax).

Combining Strategy

Combining is the opposite of decanting - you purchase multiple low-dose potions (typically 1-dose) and merge them into higher-dose potions (usually 4-dose). This works when the high-dose potion sells for more than the combined cost of the lower doses.

How it works:

Buy multiple 1-dose potions from the Grand Exchange
Visit a decanting NPC to combine them
Convert four 1-dose potions into one 4-dose potion
Sell the 4-dose potion at a higher price

Example: Buy 4x Prayer potion (1) for 1,500 GP each (6,000 GP total), combine into Prayer potion (4), sell for 7,500 GP = 1,500 GP profit (minus GE tax).

Risk Management

Start with small investments to test the market
Focus on high-volume potions for better liquidity
Avoid potions with low trading volumes
Monitor price trends before large investments
Diversify across multiple potion types

Profit Optimization

Use our calculator to find the best opportunities
Consider the 1% Grand Exchange tax in calculations
Time your trades during peak player activity
Be aware of Grand Exchange buy limits
Reinvest profits to scale your operation

Time Efficiency

Use teleports to reach decanting NPCs quickly
The GE Decanter is fastest for quick flips
Batch your trades to maximize efficiency
Set up buy/sell offers before decanting
Track your hourly profit rate

Important Considerations

Grand Exchange Tax: Remember that the Grand Exchange charges a 1% tax on all sales. Our calculator automatically factors this into profit calculations, but it's important to understand this reduces your actual profit margins.

Market Volatility: Potion prices can fluctuate rapidly based on game updates, PvM trends, and player demand. Always verify current prices in-game before making large investments, and be prepared to adjust your strategy.

Buy Limits: Each potion type has a 4-hour buy limit on the Grand Exchange. This restricts how many potions you can purchase in a given timeframe. Plan your arbitrage strategy around these limits to avoid being unable to execute your trades.

Competition: Potion arbitrage is a popular money-making method. High-profit opportunities may attract competition, which can reduce profit margins. Act quickly on the best opportunities and consider diversifying across multiple potion types.

Frequently Asked Questions

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Decanting Arbitrage Opportunities

Buy high-dose potions, decant and sell low-dose potions for profit

Potion Name	Operation & Price	Profit(After 1% GE Tax)	Margin	Risk	1-dose	2-dose	3-dose	4-dose
Goading potion(30146)	33×1 Buy 1x 3-dose @ 40,512 GP Sell 3x 1-dose @ 16,991 GP Expected: +9,951 GP each	+88,666 GP Est. Vol: 9 × 0.99 9 × 9,951 = 88,666	+24.6%	High Risk	Vol: 27 Buy: 16,991 Sell: 15,125 32m ago	Vol: 168 Buy: 32,500 Sell: 29,758 18m ago	Vol: 1,113 Buy: 43,871 Sell: 40,512 4m ago	Vol: 11,344 Buy: 61,000 Sell: 58,850 Just now
Divine battlemage potion(24632)	33×1 Buy 1x 3-dose @ 9,600 GP Sell 3x 1-dose @ 5,504 GP Expected: +6,747 GP each	+13,359 GP Est. Vol: 2 × 0.99 2 × 6,747 = 13,359	+70.3%	High Risk	Vol: 6 Buy: 5,504 Sell: 2,055 2h ago	Vol: 20 Buy: 10,056 Sell: 7,800 33m ago	Vol: 34 Buy: 9,977 Sell: 9,600 26m ago	Vol: 4,176 Buy: 18,000 Sell: 17,052 19m ago
Sanfew serum(10931)	44×1 Buy 1x 4-dose @ 21,492 GP Sell 4x 1-dose @ 6,935 GP Expected: +5,971 GP each	+199,493 GP Est. Vol: 34 × 0.99 34 × 5,971 = 199,493	+27.8%	Medium Risk	Vol: 135 Buy: 6,935 Sell: 4,800 13m ago	Vol: 224 Buy: 9,915 Sell: 9,915 Just now	Vol: 506 Buy: 17,500 Sell: 15,500 3m ago	Vol: 169,438 Buy: 21,740 Sell: 21,492 Just now
Prayer regeneration potion(30134)	22×1 Buy 1x 2-dose @ 33,250 GP Sell 2x 1-dose @ 18,800 GP Expected: +3,974 GP each	+295,070 GP Est. Vol: 75 × 0.99 75 × 3,974 = 295,070	+12.0%	Medium Risk	Vol: 902 Buy: 18,800 Sell: 18,043 Just now	Vol: 75 Buy: 39,999 Sell: 33,250 27m ago	Vol: 4,016 Buy: 57,500 Sell: 56,319 4m ago	Vol: 26,142 Buy: 74,999 Sell: 71,124 Just now
Super antifire potion(21987)	44×1 Buy 1x 4-dose @ 18,071 GP Sell 4x 1-dose @ 5,565 GP Expected: +3,966 GP each	+25,524 GP Est. Vol: 7 × 0.99 7 × 3,966 = 25,524	+21.9%	High Risk	Vol: 26 Buy: 5,565 Sell: 5,565 20m ago	Vol: 13 Buy: 8,408 Sell: 8,029 2h ago	Vol: 164 Buy: 16,000 Sell: 13,388 55m ago	Vol: 11,412 Buy: 18,600 Sell: 18,071 3m ago
Extended super antifire(22218)	44×1 Buy 1x 4-dose @ 19,497 GP Sell 4x 1-dose @ 5,909 GP Expected: +3,903 GP each	+409,543 GP Est. Vol: 106 × 0.99 106 × 3,903 = 409,543	+20.0%	Low Risk	Vol: 424 Buy: 5,909 Sell: 5,628 7m ago	Vol: 1,334 Buy: 10,073 Sell: 8,991 21m ago	Vol: 694 Buy: 15,397 Sell: 14,961 Just now	Vol: 29,201 Buy: 19,497 Sell: 19,497 1m ago
Antidote++(5958)	44×1 Buy 1x 4-dose @ 7,156 GP Sell 4x 1-dose @ 2,689 GP Expected: +3,492 GP each	+1,713,199 GP Est. Vol: 496 × 0.99 496 × 3,492 = 1,713,199	+48.8%	Low Risk	Vol: 1,982 Buy: 2,689 Sell: 1,581 24m ago	Vol: 138 Buy: 3,320 Sell: 3,003 5m ago	Vol: 3,340 Buy: 5,412 Sell: 5,325 2m ago	Vol: 107,693 Buy: 7,602 Sell: 7,156 1m ago
Relicym's balm(4848)	44×1 Buy 1x 4-dose @ 820 GP Sell 4x 1-dose @ 920 GP Expected: +2,823 GP each	+4,891 GP Est. Vol: 2 × 0.99 2 × 2,823 = 4,891	+344.3%	High Risk	Vol: 7 Buy: 920 Sell: 102 45m ago	Vol: 4 Buy: 403 Sell: 264 1h ago	Vol: 2,650 Buy: 598 Sell: 200 1h ago	Vol: 11,221 Buy: 843 Sell: 820 Just now
Forgotten brew(27638)	44×1 Buy 1x 4-dose @ 3,690 GP Sell 4x 1-dose @ 1,532 GP Expected: +2,377 GP each	+635,885 GP Est. Vol: 270 × 0.99 270 × 2,377 = 635,885	+64.4%	Low Risk	Vol: 1,081 Buy: 1,532 Sell: 599 8m ago	Vol: 275 Buy: 1,533 Sell: 1,500 34m ago	Vol: 164 Buy: 3,276 Sell: 3,276 4m ago	Vol: 39,200 Buy: 4,021 Sell: 3,690 1m ago
Bastion potion(22470)	33×1 Buy 1x 3-dose @ 9,800 GP Sell 3x 1-dose @ 4,006 GP Expected: +2,098 GP each	+81,689 GP Est. Vol: 39 × 0.99 39 × 2,098 = 81,689	+21.4%	Medium Risk	Vol: 118 Buy: 4,006 Sell: 3,914 7m ago	Vol: 744 Buy: 8,087 Sell: 6,001 52m ago	Vol: 2,229 Buy: 10,069 Sell: 9,800 30m ago	Vol: 21,999 Buy: 14,789 Sell: 14,500 Just now
Extended anti-venom+(29833)	22×1 Buy 1x 2-dose @ 8,295 GP Sell 2x 1-dose @ 5,238 GP Expected: +2,076 GP each	+2,606,346 GP Est. Vol: 1,268 × 0.99 1,268 × 2,076 = 2,606,346	+25.0%	Low Risk	Vol: 2,747 Buy: 5,238 Sell: 5,049 2m ago	Vol: 1,268 Buy: 8,724 Sell: 8,295 1m ago	Vol: 1,274 Buy: 14,460 Sell: 13,801 1m ago	Vol: 56,164 Buy: 20,000 Sell: 19,800 Just now
Fishing potion(155)	44×1 Buy 1x 4-dose @ 40 GP Sell 4x 1-dose @ 385 GP Expected: +1,485 GP each	+1,470 GP Est. Vol: 1 × 0.99 1 × 1,485 = 1,470	+3711.5%	High Risk	Vol: 4 Buy: 385 Sell: 30 1h ago	Vol: 3 Buy: 13 Sell: 10 6h ago	Vol: 750 Buy: 4 Sell: 5 Just now	Vol: 5,461 Buy: 44 Sell: 40 44m ago
Super energy(3022)	22×1 Buy 1x 2-dose @ 201 GP Sell 2x 1-dose @ 790 GP Expected: +1,363 GP each	+39,137 GP Est. Vol: 29 × 0.99 29 × 1,363 = 39,137	+678.2%	Medium Risk	Vol: 2,029 Buy: 790 Sell: 101 49m ago	Vol: 29 Buy: 1,127 Sell: 201 1h ago	Vol: 80,331 Buy: 1,600 Sell: 1,590 1m ago	Vol: 155,975 Buy: 2,150 Sell: 2,050 1m ago
Anti-venom+(12919)	44×1 Buy 1x 4-dose @ 12,900 GP Sell 4x 1-dose @ 3,598 GP Expected: +1,348 GP each	+697,328 GP Est. Vol: 523 × 0.99 523 × 1,348 = 697,328	+10.5%	Low Risk	Vol: 2,090 Buy: 3,598 Sell: 3,017 6m ago	Vol: 174 Buy: 5,834 Sell: 6,125 7m ago	Vol: 2,622 Buy: 11,000 Sell: 9,926 8m ago	Vol: 58,813 Buy: 12,970 Sell: 12,900 Just now
Anti-venom(12911)	33×1 Buy 1x 3-dose @ 6,600 GP Sell 3x 1-dose @ 2,661 GP Expected: +1,303 GP each	+94,610 GP Est. Vol: 73 × 0.99 73 × 1,303 = 94,610	+19.7%	Medium Risk	Vol: 220 Buy: 2,661 Sell: 2,483 7m ago	Vol: 614 Buy: 3,950 Sell: 4,354 49m ago	Vol: 304 Buy: 7,612 Sell: 6,600 18m ago	Vol: 54,568 Buy: 10,430 Sell: 10,230 Just now
Super combat potion(12701)	44×1 Buy 1x 4-dose @ 11,867 GP Sell 4x 1-dose @ 3,310 GP Expected: +1,241 GP each	+4,139,321 GP Est. Vol: 3,370 × 0.99 3,370 × 1,241 = 4,139,321	+10.5%	Low Risk	Vol: 13,481 Buy: 3,310 Sell: 3,051 Just now	Vol: 16,494 Buy: 6,083 Sell: 5,825 1m ago	Vol: 10,305 Buy: 9,638 Sell: 9,104 2m ago	Vol: 331,638 Buy: 12,000 Sell: 11,867 Just now
Antidote+(5949)	44×1 Buy 1x 4-dose @ 1,500 GP Sell 4x 1-dose @ 655 GP Expected: +1,094 GP each	+6,226 GP Est. Vol: 6 × 0.99 6 × 1,094 = 6,226	+72.9%	High Risk	Vol: 23 Buy: 655 Sell: 1,072 1h ago	Vol: 4 Buy: 1,223 Sell: 851 8h ago	Vol: 12 Buy: 2,016 Sell: 1,003 1h ago	Vol: 5,113 Buy: 1,619 Sell: 1,500 11m ago

OSRS Potion Arbitrage Calculator - Find Profitable Decanting & Combining Opportunities

Filter & Search Opportunities

Complete Guide to OSRS Potion Arbitrage

What is Potion Arbitrage?

How it works:

How it works:

Important Considerations

Frequently Asked Questions

1What is potion arbitrage in OSRS?

2How accurate are the profit calculations?

3How are profit calculations and metrics computed?

4What do the risk levels mean?

5What does "Estimated Volume" mean and how does it affect arbitrage?

6How do I decant or combine potions?

7What are Grand Exchange buy limits?

8How often is the data updated?

Filter & Search Opportunities

Complete Guide to OSRS Potion Arbitrage

What is Potion Arbitrage?

How it works:

How it works:

Important Considerations

Frequently Asked Questions

1What is potion arbitrage in OSRS?

2How accurate are the profit calculations?

3How are profit calculations and metrics computed?

4What do the risk levels mean?

5What does "Estimated Volume" mean and how does it affect arbitrage?

6How do I decant or combine potions?

7What are Grand Exchange buy limits?

8How often is the data updated?