I wasnt even able to find the gold value, neither direct search, nor fuzzy.
I ll keep trying and if I find something i will tell you.
Edit: just tried again and It looks like there are 2 different processes for this game. In one of them It was easy to find the gold value through direct search and refining. In fact i found 3 variables (dword, word, qword), each one a different type, that were modified after buying or selling items, to the exact amount of gold. The problem is that changing and/or freezing the values will not do anything.
If changed, they return to the old value. If frozen, looks like a new variable is created for gold. So there must be another var somewhere that is the real deal.
Will update if I find something.