[Arran]

While I can't say this for certain in this case there are several dealers or former dealers on that site that like to boast about having their "tech go through" it, which vaguely implies that the set was electrically restored. Some may even claim that a set was "restored" when all that was done was to put a new cord on and replace just enough parts to get it working, sometimes connecting new parts across the old ones. The bottom line is that I don't recommend buying from that site, even though there are some bargains to be had much of what's there are no better then "garage sale specials" with premium prices. You would be better off buying an unrestored radio and then taking it to someone you trust for an electrical rebuild, then at least you don't have to pay to do things twice.
Regards
Arran