To my knowledge this isn't a good deal. It's great they're offering you an advance, which is uncommon and usually indicates they really want you as an author, but no royalties is also uncommon. The reason they give is a good one - they have no way of tracking ebook payments. But even though print book sales are low and decreasing, they're still not zero.

I would suggest asking for something like 10% of net sales receipts for print books, offset against royalties. You still might not get much royalties however since academic monograph sales tend to be low, but you should get more than $700/£500.

To my knowledge this isn't a good deal. It's great they're offering you an advance, which is uncommon and usually indicates they really want you as an author, but no royalties is also uncommon. The reason they give is a good one - ebook payments are not easy to sort out, since people can e.g. buy an individual chapter and it's not clear how much royalties should come from that. But even though print book sales are low and decreasing, they're still not zero.

I would suggest asking for something like 10% of net sales receipts for print books, offset against royalties. You still might not get much royalties however since academic monograph sales tend to be low, but you should get more than $700/£500.