Super Auctions holds auctions in the Dallas, TX and Corpus Christi, TX areas. Both of those are within driving distance of New Orleans (if you don't mind driving).
My brother went to one, and he said you might be able to get one for that price. If you're gonna buy one to convert, don't get a nice game. Get one that nobody else wants and rebuild it. Just make sure it has a good monitor and a good power converter.