We all need to know more about contract terms, which, of course, can be a little dizzying. There's an article from the Author's Guild, here, about e-book rights to help us understand this important area. A sample:
"E-book royalty rates for major trade publishers have coalesced, for the moment, at 25% of the publisher’s receipts. As we’ve pointed out previously, this is contrary to longstanding tradition in trade book publishing, in which authors and publishers effectively split the net proceeds of book sales..."