I stumbled on the listing and think it is priced fairly. The power supply has been recapped and modified to use as a stand alone amp by someone who sounds like they know what they are doing. It looks like the coupling caps could be replaced but that is a easy job.
An unmodified version sold on the same auction site last month for 600 with 18 bids. The recap and mod work is probably worth a 200 to 300 if you had to pay someone to do it.
I have this amp which I recapped and added the power resistor. Didn't add the inrush limiter but think it is a good idea. This amp shares time with my Dynaco ST 70 which has tubes4hifi boards. Both are nice amps.