Yeah, but...
...the "grieving widow" is but one trick oft used by eBay folks to generate interest/sympathy in the universe of buyers out there.
It might be true anything can happen, even the Saint Louis Blues could win the Stanley Cup in theory but it might just as well be an out and out fib. Lord knows that it gets used a lot, judging by my "survey" visits to the place once a month or so.
Others are the "I'm not a musician" pose, usually accompanied by a vague description laced with buzzwords like "Selmer" (or the variant "Selman"), the old "was owned by my uncle/neighbor, a professional musician, for whom I am selling it" (what, can't your uncle/neighbor sell it himself?) and similar strings.
Even more common are statements like "I'm just a dealer, but I have looked at the instrument and all of the valves seem to be intact and working", this from an individual with a fancy display system laden with musical instruments. 'I'm not a musician, but I'm listing a couple of dozen musical instruments' yeah, right, sure...
Someday, I'm going to offer a course on how to lie on eBay...