The transferability of any of the e-Books depends upon their licensing,
of course ... I don't profess to be up on the legalities of resale in
any venue

It also depends on whether the ebook is encrypted. I don't think you got an actual Rocket; I think you got one of the 1500s. Rocket originally could do encrypted books, but . . . forget the sad story. Anyway anything you can read on Rocket now is unencrypted. I suppose you COULD put it on EBay, but it would be silly, because the purchaser could go get his the same place, and at the same price, that you got yours, so you wouldn't make any moneh.

 

You can get encrypted books for the 1500. You cannot sell or give away an encrypted book unless you sold or gaveaway the reader at the same time, unless  you know some really smart hacker. But it's cheaper and far less timeconsuming to just buy the book.