There are some real advantages to buying from an available source where you can get hold of the merchandise. The asking price seems to be a little on the high side to me. Get a roll of 120 and run it through the camera just to see if the transport is functioning correctly. Check the lenses with a third lens as a loupe. Shine a light up through them peering carefully down allowing the focus to fall on the various elements. Any haze due to glue separation or fungus, et c. can be detected. Also check the shutter operation in all settings.
Even though these cameras were used by professionals to a great extent, which can be hard on the transport mechanism(s), except for obvious major deterioration, these cameras are usually quite durable so make your best deal.