http://www.inkoze.de
There go to Kataloge, then click on "Zum Weltmunzenkataloge von G. Schon.
Prices are in German Marks, at level of 1998 ( IIRC), but simply divide by 2 and you'll find the actual value in Euro.
I have two of these catalogues, and they are very useful (not so big like Krause)