American Book Center, Amsterdam
The most attractive English language book shop I have seen any where. A real gem with a very well-edited selection. Since 1972. They apparently have one of those 'Espresso book' machines but I did not see it on my visit. They also have an offsite cultural center called the ABC Treehouse that looked interesting.
What to buy: Fiction books, especially.
What to pay: About average
If you're desperate for English language books while you're in Amsterdam, this is the place to come.
ABC Amsterdam was named the best bookstore in the world by the Irish Independent, and the interior was designed by architect Yaniv Turgeman specifically for the books - I personally loved the book lined staircase!
There are thousands of books, many on special offer price wise, and there's a particularly good fantasy section. I could easily lose hours here... and did!
Kalverstraat is a good place to shop with top names and food on the way, however; it can be overcrowded and very stressful :) But, as long as you're in Amsterdam, just how stressful can it be? Just kidding ;)
One important place is, in case you're left without stg to read in English; this is where the American Book Center is. Although, will you really have time to read that much??
What to buy: Last time I've been there; this huge shop had 2 floors. So, you can basically buy any reading material in English
What to pay: Let's say that I paid 15 Euros for Coelho's Alchemist
This bookstore claims to be the finest English speaking or at least American bookstore in Europe. Having travels throughtout Europe, I have to agree with that claim. There are more titles available here than any other bookstore that I have dropped into in Europe. If you forgot to bring along a book to read while either staying in Amsterdam or to keep you company while traveling through Europe, well then this is a place to go.
What to buy: Books. A wide variety of title available. It is particularly strong in non-fiction books especially history.