Where could I buy Final Fantasy VII for the PSone now?

I've never actually played it before. I've heard its really good and I just bought a PS2 (not really sure why I waited till now...) so I thought I'd try some of the clic great games that you can't afford to miss. I'd also appreciate a couple of suggestions on other games to try but I'd just mainly like to find somewhere to buy FF7. I can't seem tp fond a store nearby selling PSone games and any searches online just get results dealing with FF7: Advent Children, or FF7: Dirge of Cerberus. Anyway IF you actually read through all these additional details: Congrats! Your attention span is about 50 times better than mine! Anyway please help.