Hey I found a little "cheat". Just wanted to tell you I was able to get unlimited Gold :D. If you take the guild contract and then go into your inventory and use the contract to get gold all you have to do is repeat that action. So I just went into the shop menu again and the contrac was not used up anymore. Also a completly drained up energy of a student was no problem. Not sure why I was able to "buy" the contract again and again. But I think limiting the Items in the shop would fix it.
I like the Storys btw. :D