I can say, without a shred of doubt, that my experience with Open Book Publishers has been nothing short of excellent. For reference/comparison: I’ve published three other books with Cambridge UP, Bloomsbury and Palgrave. In all respects, OBP were at least as good, if not better in some areas, than some of the others.
A few areas are worth commenting upon:
The peer-review was excellent in terms of both rigour and speed. It was relatively quick and they kept me informed throughout when one of the reviewers asked for a deadline extension. When I did receive the reports (of which there were three – more than on any of my other books) – the feedback was constructive and clearly from people who knew the field.
Production. This was another great experience. The copyediting was done by an academic (I think she is a postdoc at Cambridge) and was extremely thorough. It was also done in a timely fashion. Cover designs and typeset proofs were also extremely quick. Finally, the whole thing will be out this/next week. I only delivered the final manuscript last month. It is fantastic not to have to wait ages for a book to be published.
Prices. Paperback at £16 and free PDF online. Can’t really beat that.
I managed to get Birkbeck to fund the Book Processing Charge and I don’t regret it at all. I’d publish with them again.