Honestly he is unfair to eBay. He ordered a DVD from Greece, which is a PAL country! So unless he has a player, that has been modified to be universal, and can NEVER be connected to the Internet, the disc would have been absolutely useless to him.
When I have had a problem on eBay, they have always backed me up. When I bought a Quad 44 preamp, that had a serious undisclosed fault, I repaired it, and I applied for a refund of my labor, at customary rates. My bill was paid in full from the sellers account.
I know he is frustrated now, as his receiver is a boat anchor, and replacement units are hard to find.
He should consider used units. I understand he does not want the latest Bells and Whistles. So an older pre/pro and power amps could be a good solution, as obviously he likes to keep his equipment long. I can attest to the fact that pre/pros do have long legs. From a technical design standpoint, it would be highly surprising if they did not. It is not just a heat issue, but a power supply, supplying multiple power amps, also supplying the pre amp and processor stages, is far less than ideal from a practical and design point of view. Yes, I will say it up straight, it is a really bad idea.