Eh, to go through a game for 10 hours just to see what the shop system is like.. that's really not something I'm going to do at this point. Plus, if the shop system is really complicated (which it probably is if you can't explain it) that's another 10-20 hours of coding/testing/debugging.

I'd say to either spend a LOT of time coding what you want, or use a much simpler version of it. Besides, if anyone's played that game they'll just look at that part and go "Bah, he just took that off of Dragon Warrior " and not really care about any of the work you put into it.