Can I take this opportunity to recommend the lovely http://bookshop.org and http://uk.bookshop.org
An online retailer that allows you to send a cut of the profits to a local independent bookshop of your choosing.
No connection. Just a satisfied customer.
> Please note: eBooks can only be purchased with a UK issued credit card and all our eBooks (ePub and PDF) are DRM protected.
Bloomsbury OTOH sells DRM-free e-books.
for audiobooks.