heh, I think you've responded to the wrong comment, but I appreciate the information nonetheless!
btw have you noticed that the sell price of stuff you're selling sometimes changes too? as far as I've noticed; it seems to be random, but for whatever reason an item that you would sell for 10 can sometimes be priced as 3 , when you're about to sell it. You have to go out of the shop and then in again, and the price fixes itself - either that or go to a different merchant. It is pretty weird, but I think it is a glitch.