Hard to tell about prices on these. I bought a Commercial 1917 at a local auction in July of 2016 for considerably less than $1,000. (I wasn't looking for one but the bidding was so low I jumped in and got it.) It had been professionally re-blued but otherwise in excellent condition with numbers matching in all 5 places as well as matching grips. Didn't know much about these until I purchased mine. Since then I regularly check sites such as GB and go to auctions, etc. and have never seen another one for sale. I have posted pictures previously. I have not lettered it but am considering in future

Good luck. They are a great piece and fun to shoot.