What is the market/value for used 375 H&H brass (fired once)? Same for 270WSM and 300WSM. Thanks.

Depends on the market, brand & how it's processed (cleaned, sized, etc.). Lokk @ the price for new & then cut that at least in half for OF. I just bought some OF 9.3x74R Norma brass for $45/100 shipped to me on e-bay.

Thanks for the information.