As I recall, a year ago the website was much more interactive. You could click on different categories (CaD QDs, Cad free QDs, etc) and there were different descriptions of the types available, plus different quantities and media you could select. You could select what you wanted, put it in our shopping cart, and then pay by credit card.
To me that was an on-line catalog. You could call and request custom options but that was need necessary.