Decanting

Bob Barter at the GE decants noted potions instantly and free — so when a cheaper dose variant exists, buy it, decant, and sell the 4-dose. Every row reconciles left to right: cost of 4 doses' worth + profit + tax = 4-dose sell price, priced at instant execution.

Potion↓	Buy dose↓	Cost / 4 doses↓	4-dose sell↓	Tax↓	Profit / 4-dose↓	Source vol/day↓	4-dose vol/day↓
Divine super strength potion	(2)	3,288	5,710	112	+2,310	103	12,886
Divine super attack potion	(1)	2,168	3,712	74	+1,470	327	8,916
Extended stamina potion	(2)	6,224	7,717	152	+1,341	1,106	109k
Sanfew serum	(2)	20,584	22,179	443	+1,152	663	221k
Anti-venom	(3)	9,896	11,242	225	+1,121	425	69,204
Extended super antifire	(1)	19,084	20,382	407	+891	721	49,446
Divine ranging potion	(2)	5,760	6,502	128	+614	1,693	242k
Divine magic potion	(3)	2,912	3,413	68	+433	443	19,454
Ancient brew	(3)	1,544	1,902	39	+319	16,785	76,686
Saradomin brew	(1)	6,692	7,100	142	+266	6,260	961k
Zamorak brew	(3)	588	848	15	+245	8,013	7,884
Forgotten brew	(3)	2,668	2,954	58	+228	8,278	50,867
Armadyl brew	(3)	732	969	20	+217	32,268	121k
Ranging potion	(2)	1,824	2,081	41	+216	8,324	392k
Antipoison	(3)	376	538	10	+152	8,802	29,161
Super strength	(3)	3,200	3,380	68	+112	284k	414k
Super defence	(2)	3,300	3,470	67	+103	962	430k
Prayer potion	(3)	9,596	9,880	197	+87	317k	1.35m
Super attack	(3)	1,776	1,900	38	+86	226k	367k
Bastion potion	(2)	14,376	14,698	291	+31	176	33,420
Super restore	(3)	10,556	10,800	216	+28	204k	933k
Magic potion	(2)	88	111	0	+23	456	96,823
Combat potion	(3)	104	128	2	+22	12,720	35,391
Energy potion	(2)	148	165	0	+17	3,028	123k
Strength potion	(3)	112	125	3	+10	24,607	107k
Attack potion	(3)	12	20	0	+8	52,492	30,140

Filtered to families where both the source variant and the 4-dose trade ≥100 units/day. Charged jewellery that shares the (N) naming is excluded. Real throughput is capped by buy limits and volume, not decanting speed — Bob is instant.