I haven't bought kegs in a while and I'm wondering if they are getting more expensive. I just bought a 4th for my setup and it set me back $65 at the homebrew store. I'm also having trouble keeping it sealed at low pressure (not a problem for my other 3). I'm starting to wonder if all the good kegs are already in circulation. Is there anywhere I could buy 3 or 4 more online cheap?
If you don't mind pin lock style kegs you can pick them up from kegconnection.com for $35 with $8 flat rate shipping.
Check these guys out: http://www.homebrewing.org/Set-of-Four-5-Gallon-Ball-Lock-Kegs_p_1549.html $37.50 each if you buy 4. Can't beat that!
just bought one from homebrewing.org and it was in the best condition for a ball-lock corny keg i've seen in years. Service from them was awesome as well...i think i found my new online provider.
Homebrewing.org is the webstore for the local homebrew shop. Those guys are awesome. They have helped me out many times. Incan highly recommend that site to anyone.
Adventure in Homebrewing is my LHBS. Very good guys and they know their stuff. They have still been finding some large lots of kegs, but the owner says it is getting harder and harder. Buy while you can. The supply will dry up one of these days.