Don't want to rain on your parade, but you might as well get it into mind, you are not going to get a stock gun that will be good for the PPC 1500 match. This is a very good gun and "might "squeak you by at 25 yard(doubtful), but anything less then a "tweaked out " gun that will shoot decent at 50 yards(2" or less}you are squirting in the ocean. I understand your budget is tight, but don't go cheap and be sorry later. Just my opinion. Look for a gun that you can maybe purchase from a PPC shooter that is hanging it up, and possibly get at a reasonable price.
One suggestion is if you want to go stock, might consider a Springfield Range officer loaded in 9mm. Just machine rested one that a friend bought and it was shooting 2 1/2- 3" groups with Atlanta Arms 115 JHP. Not too bad out of box.