i disabled the second shopkeep's refresh on level switch . he also doesn't have the mana-to-refresh mechanic (why would he, he's just some guy!) so you only get that one roll. that kinda sucks, and i;m trying to figure out what he could do to allow more items. perhaps he can just have more to begin with? ill think on it..
I thought I had seen a screenshot of him having a refresh cost silver skulls, I guess I must've imagined it... Well that's one idea I guess.
I suppose I am pretty much right in your target audience so its no wonder I don't get bored hehe, could definitely have finished it again. Its a game I could've seen myself make. Feels like the difficulty is a bit off though with it not really getting harder, at least in the mid game. So if you do make it a bit easier the rest should be tweaked too of course.
Also it would be really nice to have the alchemikal tables on the minimap, fountains could disappear from it after using them.