Questions (for thought)

1. What prevents ebooks from having special editions?
2. Could there be a market for signed and limited editions for ebooks?

Answers

1. Lack of imagination
2. Yes. There is a market in there somewhere. Size is unknown and as far as I am aware no one is presently serving this market. Ebooks are a relatively new content distribution channel and have probably not hit the mainstream market yet.

Notes:

Possible example of 1 of 1000. Suggest using the limited edition total as being between 1 and 10% of expected sales. There would be some sort of price premium for the limited edition, but there could be other perks in addition to the satisfaction of having it.

Behind the cover in the ebook would be a special limited edition page that would have the edition number, EG: 147 of 1,ooo,  and a signature of the author.