I've gone to one show, the Contemporary Metal Werk (with an e) Expo in Bellevue, WA about a month ago. It was a very small show, with primarily custom makers. I didn't really see any production models, except for a few custom collab. Sypdercos (Bob Lum, Jess Horn, D'Alton Holder were there). In my opinion, if you want the best price, you're best bet would be through one of the wonderful online dealers represented here on the forum.
However, I could be wrong. Just keep your eyes peeled and you'll find that great deal!