For legal info about contracts and samples/ad-sizes please refer to the Allgemeine Geschäftsbedingungen (AGB) and
AGB Internet (both only in german, sorry).

All necessary info about advertising rates, discounts, online-banners, data-delivery and deadlines are downloadable in one PDF-file (open in separate windows):

VS Medien rate card 2008 (VISIER, caliber, SWM, online)