[Rick Lee]

There are a ton of sites with dirt cheap guns - CDNN, AIM Surplus, J&G, gun.deals, etc. Then you have the classifieds on the various Glock and SIG forums. Gunbroker can be great. But there's no sniping there. Any last second bid extends the auction by 15 more minutes and that can go on indefinitely. I put a late night, drunken, lowball bid on a 1911 I was sure I'd never win. When I woke up, there was a "congratulations" email. So there are deals there.

FWIW, you can buy everything but a lower receiver and a >10 round mag on eBay and Amazon, get free shipping and no sales tax right to your door. And you can even buy 80% lower receivers on those sites and bypass the FFL. I did my last 80% build up in about an hour and had it running at the range the same day.