I've ordered from this place before. I think I ordered 6 total in the past of this "grade B" variety that they sell. They're basically just kegs that haven't been thoroughly cleaned with replaced gaskets. I got them for $18/pc a year ago, they went up significantly and this batch sale is the best price I've seen them since. Oh, I have had some not work out too well too. One I had that didn't hold the seal and the guy sent me a replacement with a return label for the bad keg with no questions asked. Another had something that I just couldn't clean out of it. I haven't fully given up on that one but I haven't used it. At $18/keg it was too good a deal to pass up and I went ahead and ordered another lot of four for $80 today. Shipping was about $21 for me.
www.homebrewing.org/Set-of-4-Soda-Keg...