Ultracompost price in OSRS — live Grand Exchange data

About Ultracompost

In game it is examined as “Ultra-good for the smallest or largest of plants.” Ultracompost is members-only, so a membership is needed to trade or use it. The base game value is 85 gp, which is what shops price from rather than what players pay.

Ultracompost buy limit

The Grand Exchange lets one account buy 2,000 every 4 hours. That is enough to build a real position inside a day. Filling it once costs about 1,198,000 gp at the 599 gp price recorded on 11 October 2026. The limit is per account and resets on a rolling 4-hour timer.

GE tax on Ultracompost

Selling at 599 gp costs 11 gp in tax — 2%, rounded down, taken from the seller. A flip has to clear that before it makes anything, and it is the number most margin calculators leave out.

High alching Ultracompost

High alchemy turns one Ultracompost into 51 gp. That is less than the 142 gp nature rune the cast costs, so alching Ultracompost always loses money.

How much Ultracompost trades

Ultracompost sees about 50.0K trades a day, which makes it steadily traded — an order priced at the spread normally fills the same hour. That is roughly 25 times the 2,000 buy limit.

Ultracompost FAQ

How much is Ultracompost in OSRS? Ultracompost is 599 gp on the Grand Exchange as of 11 October 2026, with an insta-sell of 580 gp. The chart above is live.

What is the buy limit for Ultracompost? 2,000 every 4 hours.

Can you high alch Ultracompost for profit? No — the alch value is 51 gp and the nature rune alone costs 142 gp.

Do you need members for Ultracompost? Yes, Ultracompost is members-only.