Colt 1911 frame price check

I have a stainless steel take-off 1911 Colt Commander frame I got in a trade and am looking to sell.

It came off an XSE model and is complete, but it has a standard spur hammer and grip safety as opposed to the enhanced hammer/grip safety it originally came with. I guess the original owner preferred the classic parts. it still has the ambi safety and original grips.

It looks to be in new condition, but it does have the idiot scratch.

Any ideas what I should ask for it? Best place to list it?

1911addicts.com has a very active classified section. There are also a bunch of professionals that post there that might be interested in it for a build. A complete Colt frame is easily worth 3-350.