That is TOO FUNNY! I read Katie's message and rolled on the floor laughing... (High Fives, Dave).
Katie, this ALERTS the high bidder.
I had to go by eBay and look: "tmcmullin" has definitely learned a lesson. (By the way, as I write, less than 2 hours left, 65 bucks... hey...)
In this case, its likely a perfectly good calc. But in general, if a vendor is willing to use somebody else's work WITHOUT PERMISSION (and Dave is not that hard to reach), you can practically count on the 22s being less than advertised.
Picture hosting costs money. Either people have to point to their own sites, or they use services that run banners, or they pay eBay a small fee for picture-hosting. So "borrowing" a picture on another site is likely an everyday occurrence.
But the site they point to gets not even a nod? Not even the opportunity to say, "hey, visit this place for good info?" All the extra server traffic of eBay's picture-loading, but no traffic into the site itself by people interested in that calculator?
The reason some vendor would not give this nod willingly is that he/she DOES NOT WANT the buyer informed. The vendor who borrows without reference or permission is probably hoping someone will come along who has no reference-point to its value, and so will bid much higher.
I'm fairly sure Dave has often given permission to people who asked, with the reasonable qualifiers any copyright holder is entitled to.
If vendors do not SEEK permission, you might as well presume that the calc IS a TI DATAMATH with a masking-tape label.
Hmmm.... less than an hour and 45 mins.... hmmm.... (no, not me this time; good luck Katie if ya go for it)