Reply to post #102
(show post):
"More affiliate options [and] More Dutch sellers"
Seconded for Germany and, for that matter, France. Hugendubel and Mayersche Buchhandlung in Germany, FNAC in France ...
Also, for some independence from book seller data, how about additionally sourcing books through the big national library systems? Library of Congress (U.S.), Deutsche Nationalbibliothek (Germany), Bibliothèque nationale (France) - etc.