There is a guy on ebay selling 2 packs of pepsi ball lock corny kegs for $40 (plus $20 shipping). if you buy 2, 2 packs (4 kegs total) he will sell them for $35 a 2 pack with $40 shipping. That comes to $110 shipped for 4 kegs. Each keg comes with a new set of gaskets! If your buying atleast 4 make an offer for $35 a piece and include a message saying you were refered by "johnson.3347" and all should go smoothly
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110607057534&_trksid=p2761.l1259
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110607057534&_trksid=p2761.l1259