You're welcome - and glad you like it. ^-^ You've seen a lot of it already, the parts you're currently at are what I'm working on. The dungeons might be a bit difficult alone, so be careful. :3
There's .. some sort of purity and coin types. Right now I have small silver coins, regular silver coins, ancient silver, and gold coins - each one of them is worth more than the other. I might split the gold coins up into small gold coins, regular gold coins and ancient gold coins - but at the moment I have too many items for the handful of dungeons in-game.
The money you get from selling is always the same silver and gold though. Your character exchanges 100 silver coins for 1 gold coin automatically, so that it never needs to carry *too* much around. ^^