I've sold/shipped many OEM S&W 10 rounders to the OP.
Based on the comments/observations in this thread,time to put extra emphasis in the acquisition of 10 rounders at the shows here in Ohio.
This weekends Warren show should prove fruitful as I haven't seen my 'suppliers' since August.

I have 3 suppliers at the shows,I buy a lot from them so they give me lower prices and they know I buy for selling/shipping out at $5 over what I paid them. Hopefully prices won't start escalating because of national situations. When they see me roaming the shows they tell me to make sure I stop and see them as they've acquired 'stuff' I'd be interested in.