WALMART
Can I suggest that buying Brass Eagle paint from a retail outlet is a very bad idea. As an alternative, buy paint through a paintball suplier (I am afraid I am in the UK and so have no idea who, but how about contacting a paint company and asking them?) , or buy it by the case from your site (if you let them know it'll be a regular thing then you might be able to cut a deal). If you don't use an entire case, how about finding a friend to split the case with?
Sparklie's idea about volunteering to help at the site (I think there are some jobs that you could do on the site) in exchange for a paint deal is sounds pretty good to me, just ask at the site (the worst thing they can do is say no).
As to Brass Eagle paint... I think you will hear some pretty strong opinios about the quality of this paint, I have never used it, but I have heard about it.. and believe me, Diablo, Zap, RPS are all much better respected paints.
Anyway, whatever you do, have fun ballin'
Richard