I reckon that the only people that will get upset at you are the ones that think E bay is still a big secret.
A while ago an FC instrument cluster (dashboard) was on E bay and it had a Wilsonia guage in it, the seller did not realise it. Must not know what a Wilsonia is or is worth.
Someone linked it to this forum and I did see some negative comments from people on the forum indicating that they were upset that the wilsonia was highlighted. The thing is it was on a public website (Ebay and the guage also stuck out like dogs nuts to those in the know.
Honestly E bay would have to be the worlds worst kept secret and I don't see a problem linking stuff.
Will probably ruffle some feathers, oh well
Cheers M