Try this shop as well, bought a .357 snubby in early Dec from them. They usually have a few sigs, they sell new and used so sometimes there prices suck.
It's a nice Sig, but Dury's Guns has one for $639, and it comes with their special lifetime warranty.
I appreciate your finding that ad for me though.
I'll probably go with Dury's if I can't find a Sig Navy at the Gun Show tomorrow.