Harry... I think it is a very good guess that Mr. Diamond (or whatever
his real name is) also sent the email. I don't know if he posts
look-at-this messages just to troll for attention, or whether he is
taking out his frustration on you because he can't afford a decent
receiver. There are several possibilities.

That good quality older receivers command more than they originally
sold for is not new news. Look at the prices the older Panasonic
portables (2200, 2600, 2800, 2900) command. A Sony ICF 5900 will
usually sell for 4x it's original price. The 2010 is the receiver that
first got me interested in this hobby. It was a gift from my wife in
1986 when she was studying RF communications in the EE program.
Needless to say that radio got a lot of use.

Ignore the troll and enjoy your radio.