pedalbiker has been selling those for quite a while and I think several people on here have bought some of his wares. Keep in mind that the welding, couplers, 3 pc stainless ball valve and sight glass aren't cheap/free. With that in mind, if you don't want to build one yourself, and you want top-shelf gear on it, it's a fair price. Not a "steal", but you're not getting ripped off either. Just my $0.02.