I've been trying contantly to get this materia for two days now. In my FF7 strategy guide, it tells me that the Final Attack Materia is obtainable as a "chocobo racing prize". Well, I must have gone through a hundred S-Class races with my Gold chocobo, and the "Final Attack" materia hasn't shown up once in the prize box thing. After a few races, Ester stopped me and said something like, "Wow! I haven't seen anybody win so many s-class races since Joe." and then she gave me a bunch of items, but the final attack materia was not one of them. Any help?

One will do.