I'm not sure if this is allowed in this section, so if it isn't, please feel free to delete.
For anyone in the New England area, Border Brew Supply in Salem, NH is selling refurbished corny kegs for $30 if you buy 3+. It sounds like it's not a regular deal for them, but I drove up there today and picked up a few. I figured it was worth a shot.
I found it on craigslist: http://boston.craigslist.org/gbs/for/2992595228.html
For what it's worth, when I talked to them, they told me that they will not ship.