My problem (need GBA fanatic's help!)

I am one of those handheld gamers who have moved on to the DS LIte. But for a long time I have wanted various GBA games and haven't found any of them. My question is, do you know where I can find the following games (new not used) in which store(s) in Florida, USA:

Metroid Zero Mission

Final Fantasy I and II

Final Fantasy V

I also plan on getting FFVI, which is easy to find.

Try something like Amazon or ebay(be careful there ofcourse).

I seriously doubt that it'll be easy finding an un-used copy of Dawn of Souls though..