Giant seaweed price in OSRS — live Grand Exchange data

About Giant seaweed

In game it is examined as “Seaweed of large size.” Giant seaweed is members-only, so a membership is needed to trade or use it. The base game value is 2 gp, which is what shops price from rather than what players pay.

Giant seaweed buy limit

The Grand Exchange lets one account buy 11,000 every 4 hours. That is a generous limit, so the market rather than the limit is usually what caps a position here. Filling it once costs about 748,000 gp at the 68 gp price recorded on 11 October 2026. The limit is per account and resets on a rolling 4-hour timer.

GE tax on Giant seaweed

Selling at 68 gp costs 1 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 Giant seaweed

High alchemy turns one Giant seaweed into 1 gp. That is less than the 142 gp nature rune the cast costs, so alching Giant seaweed always loses money.

How much Giant seaweed trades

Giant seaweed sees about 17.3K trades a day, which makes it steadily traded — an order priced at the spread normally fills the same hour. That is less than twice the 11,000 buy limit, so a handful of buyers can take a whole day of supply.

Giant seaweed FAQ

How much is Giant seaweed in OSRS? Giant seaweed is 68 gp on the Grand Exchange as of 11 October 2026, with an insta-sell of 65 gp. The chart above is live.

What is the buy limit for Giant seaweed? 11,000 every 4 hours.

Can you high alch Giant seaweed for profit? No — the alch value is 1 gp and the nature rune alone costs 142 gp.

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