iksar monk merchant rastok in east cab
 

20 bandages should only cost 1g 60c. it ate 4gold instead, and claimed i spent 1p 6 silver to him

20 bandages roughly cost 1p 2s for a stack. Do by chance you have super low Charisma?
It will effect your vendor price if too low. I just checked Rastok on my monk and he charges a normal price of 5silver 3copper per bandage (1p,2s stack)

It's 10:1 on coins, not 20:1... 5sp 3cp x20 = 100sp,60cp = 1p,6s. You've done 20x 5sp for 1gp instead of 10g / 1p.

-Mcoy

0053 per bandage, times twenty makes 1060 per stack. Did you have a bunch of silver/copper worth 660 which got disappeared as well as the gold?