trx - it may be time to consider charging $1.00 per transaction/ad. That would help defray the cost of upgrading.
not to sound cheap, but I'll just move on to other sites if VAGT starts charging members for use. Plenty of other sites that are also free I can and do use. Heck I'm a paying member over at arfcom for the next year...that's less than 7 cents per day. And that's not even needed to use their equipment exchange that gets lots of traffic.
Rather than charge users, I'd look into ad space. Lots of gun forums have gone this route (including OCDO, arfcom, glocktalk, etc) to support the cost of running the site.