Guam tar price in OSRS — live Grand Exchange data

About Guam tar

In game it is examined as “A thick, foul-smelling, tar-like substance with a green tinge.” Guam tar is members-only, so a membership is needed to trade or use it. The base game value is 3 gp, which is what shops price from rather than what players pay.

Guam tar buy limit

The Grand Exchange lets one account buy 7,000 every 4 hours. That is enough to build a real position inside a day. Filling it once costs about 105,000 gp at the 15 gp price recorded on 11 October 2026. The limit is per account and resets on a rolling 4-hour timer.

GE tax on Guam tar

The 2% sale tax is rounded down, and at 15 gp it rounds to nothing — sales under 50 gp are untaxed, so a flip here keeps its whole margin.

High alching Guam tar

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

How much Guam tar trades

Guam tar sees about 5.4K trades a day, which makes it moderately traded — an order may take a while to fill, so price it toward the middle. That is less than twice the 7,000 buy limit, so a handful of buyers can take a whole day of supply.

Guam tar FAQ

How much is Guam tar in OSRS? Guam tar is 15 gp on the Grand Exchange as of 11 October 2026. The chart above is live.

What is the buy limit for Guam tar? 7,000 every 4 hours.

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

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