Yeah Best Metals had (or had?) some of the smaller version, but they also have sanke connections in the side as well as the bottom. You could also try the other salvage yards around town, they do get them periodically. Jmac00 I think may see them at yards outside of town periodically as well so you could ask him if he's seen any recently. Otherwise there is a fellow on the Hanwell that has a bunch for $75 a piece. They are 50L kegs, both Kyle and I have picked up one from him... let me know if you want his number...