I also happened to "game the market", yesterday. Came with my 2000 starting gold and an empty caravel. Left with something like 4500 gold, just by buying then selling food and other things. Because you raise the price each time, but it doesn't drop as quickly, meaning you'll make a profit in the end.
I "raised" food selling price to 44, for instance :) And honestly, this exploit felt fun, at least for a time. So, I guess that's something more to patch.
As for the credits, you're welcome to include my nickname, "Kzwix", in your list. I'll feel honored ;)