Yeah, I bought 4 off ebay back in 2008 and paid $25 a piece so I think $28 is pretty good now a days. All the LBS in my area are selling them for $45-65.
It's a good price if you can pick them up in person, or are buying a large quantity. For a single unit, shipping is $40... The shipping price per keg drops as you increase the quantity.
If you're ever up in the Chicago area, there's a guy who regularly has them for $35-40/each on Craigslist.