Good explanation akg_ca. Are you in the hifi business?
Hawthorne Stereo won't want your AVR. They are devoted to 2-channel gear. They also prefer sought after vintage gear over more recent common budget stereo receivers.
I have owned a few used AVR receivers that I got for a low price but originally sold new for much more. I would only expect to sell an AVR at a fraction of the new cost. Most of them just don't have a good resale value.
It is a shame the Bellingham store was not more considerate of you, Gabe.
Good luck to you!