As mentioned before, your best bet is to keep an eye out on the M2M section for a Marlin modded Noob 127. And $800 should cover a Marlin modded 127 on the rep strap.....unless the seller is trying to profit or is including an aftermarket strap. Of course there are other things that can be done that can raise the price even more (relume, true waterproofing/pressure testing, swiss movement...etc). I love mine and wouldn't think of selling it but as mentioned before, they do pop up.
One last thing, if you do end up getting an unmodded one, it'll be quite some time before you are able to send it off to Marlin, if you choose to do so, as he is not taking any more orders for some time do to managing time with his actual job. You can read more about it in his section in the Supporting Vendors.