I happen to be the person selling these cameras

Yep, I've had 6 of them done. Yep, they're all nicely finished. As to the quality of repair, I used two other repair shops in the past; Bill did the best job, also one of the other shops was very close. I know what he did to the camera as he documented almost every step, sending me pictures of the camera, disassembled; sending pictures of problems he discovered that I *knew* were there; finally, sending back unused spares and bits I asked for (like a good prism extracted from an unrepairable body, tops/bottoms/MD caps etc.) I still have all that to show to an interested buyer, but... we're talking about a sum of $175 here. After all I've been through (buying these cameras, sending them over to the UK, finding that 4 out of 10 I bought were unrepairable, paying for leather kits from Aki Asahi, and so on and so forth) it's probably not worth the effort. Anyone is very welcome to do the thing I did (buying a used OM1, sending it over for an overhaul, buying a new leather kit, finding a donor OM10 body with good prism - or paying some $60 for one provided by the repair shop), or at least doing the math to estimate the cost of all this. However conservative numbers might be, it's very unlikely it all can be done for under $200 (including shipping here'n'there, I mean).
Oh, and here is one of the bodies we're talking about (picture taken by me, with a soft-box, and hosted on my personal Web site BTW):