Saradomin brew decanting profit

Bob Barter at the Grand Exchange decants Saradomin brew between dose sizes for free, so the price per dose of each size is what matters. Buying one dose costs (1) 1,673 gp, (2) 1,724 gp, (3) 1,733 gp, (4) 1,766 gp. The best direction now is to buy the (1) and sell the (4), keeping +17,500 gp per 1,000 doses after the 2% GE tax. 1,208,469 potions of all sizes traded in the last 24 hours.

Data age: the oldest price used here is from a trade 77m ago. Prices refresh every minute.

Best direction now

Buy (1), decant at Bob Barter, sell (4): +17,500 gp per 1,000 doses after tax.

Per dose: pay 1,673 gp, keep 1,691 gp after tax. 1,000 doses is 1,000 (1) potions in and about 250 (4) potions out.

Cost per dose by size

Potion	Buy now	Cost / dose	Sell now	Kept / dose	Vol / 24h	Buy limit
Saradomin brew(1)	1,673	1,673	1,688	1,655	6,124	2,000
Saradomin brew(2)	3,447	1,724	3,425	1,679	2,920	2,000
Saradomin brew(3)	5,200	1,733	5,150	1,682	235,683	2,000
Saradomin brew(4)	7,064	1,766	6,900	1,691	963,742	2,000

Cost per dose is the instant-buy price divided by the doses. Kept per dose is the instant-sell price minus the 2% GE tax, divided by the doses. Per-dose figures are rounded to the gp; profits use the unrounded values.

Every direction, per 1,000 doses

Buy	Sell	Profit / 1,000 doses
(1)	(4)	+17,500
(1)	(3)	+9,333
(1)	(2)	+5,500
(2)	(4)	-33,000
(2)	(3)	-41,167
(3)	(4)	-42,833

Buy limits apply per dose size, so the source size's limit caps how many doses you can move every 4 hours.

Prices are instant execution on both sides, so patient offers usually do better than these numbers. See the decanting table for every profitable potion right now.