I've been offered a chance to get my short stories published by abook2read.com, the British e-book publishing site. Now as per the contract, which I have not yet signed and which is here, the publisher has first refusal of all future works by the author and in case the author and publisher can't come to terms, the author is free to approach another publisher only if that publisher is offering terms that abook2read can't match. The contract's last page provides a list of royalty values.
At the same time, there is the fact that unlike print runs, I know of no secure way one can learn of actual e-book downloads.
My questions: Has anyone else published with abook2read? Are these terms acceptable? How can one keep track of numbers of e-downloads? What experiences have the other authors here had with e-book publishers? How do e-books stack up against print publishers? Please let me know!