I buy some stuff at Rockler, mostly carving knives and books, but I'm not real happy about it because their prices seem a bit too high for me. I think they price the stuff fairly high because they have no competition in this area. (Central US) I shop around at flea markets for old carving tools and make some of my own, and occasionally I'll look for deals on ebay.
I have found some decent hardware stores over the years that carry some exceptional product, but hardware stores like that are becoming a rare breed of cat. You know what I mean, the ones with the old wood floors and massive inventory supply that has been accumulating for generations. Those are definitely fun to poke around in.
Also, I've found some exceptional hardware in some of the old architectural salvage yards around the country.
Take a look at this page and some of the vendors. I've used a few of them with favorable results.
worth looking at
Give me a better idea at exactly what you're looking for. Who knows, I might have it.