If you are not in need of the $$$, I would keep it unless you get a chance for a local sale. As you say, to package and ship would be costly and always has risk.
Sell or save
I have an older Jolida 502 integrated that had some upgrades. I replaced it with another amplifier. Just wondering how many people keep a spare around for just in case. This summer, the new amp needed some work and I was happy to have the spare, but my wife would like to get rid of the extra stuff. I figure the amp is not worth too much (? $400) so would you keep a spare, or put it out there for someone else?
It is heavy, so shipping might be a significant factor in terms of what I could get for it.
Maybe just give it a whirl on the local Craigslist?