Magic potion decanting profit

Bob Barter at the Grand Exchange decants Magic potion between dose sizes for free, so the price per dose of each size is what matters. Buying one dose costs (1) 12 gp, (2) 22 gp, (3) 25 gp, (4) 42 gp. The best direction now is to buy the (1) and sell the (3), keeping +25,667 gp per 1,000 doses after the 2% GE tax. 187,531 potions of all sizes traded in the last 24 hours.

Data age: the oldest price used here is from a trade 2h ago. Prices refresh every minute.

Best direction now

Buy (1), decant at Bob Barter, sell (3): +25,667 gp per 1,000 doses after tax.

Per dose: pay 12 gp, keep 38 gp after tax. 1,000 doses is 1,000 (1) potions in and about 333 (3) potions out.

Cost per dose by size

Potion	Buy now	Cost / dose	Sell now	Kept / dose	Vol / 24h	Buy limit
Magic potion(1)	12	12	3	3	6,207	2,000
Magic potion(2)	43	22	41	21	435	2,000
Magic potion(3)	74	25	115	38	77,873	2,000
Magic potion(4)	169	42	140	35	103,016	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)	(3)	+25,667
(1)	(4)	+22,500
(2)	(3)	+16,167
(2)	(4)	+13,000
(3)	(4)	+9,833
(1)	(2)	+8,500

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.