I assume you are in the States based on the "NY" part of your moniker. David Beetles is once again the US distributor, for a long while it was Albert Porter. It might be worthwhile to ask about service history. And check the tube complement.
I have the H3000 phono stage, don't roll any tubes except the rectifier in the power supply chassis and have had no issues with the unit except a bad tube socket, which I got a local tech to help me replace.
Find out from the seller who he bought it from; though Albert may not have much incentive at this point, he's a good guy (and sorely missed on these fora). David is OK--I spoke to him a few times shortly after I got my unit.