I have a 2 tap kegerator I converted from an old fridge with two perlick taps on it and a drip tray. In good condition, keeps beer cold, and has room for 2 kegs plus a CO2 tank. You could fit 3 kegs in there with a little work to avoid the compressor hump but I haven't gotten around to doing that yet.
Considering the money I spent on it, plus the taps I'm looking for about $300. Shipping isn't an option of course, and I drive a Subaru so even in the Denver/Boulder area you'll need to come get it.