I don't see many publishers on CB that do this. Wouldn't this not only help their sales, but also affiliates sales with more for customers to buy so affiliates can earn $30 commission on 1 product, or $300 commission on 10 products...
well some do. but you have to sell products directly related. Ex: 1)For 50$ you get platinum access to all the features 2)for 100$ you get platinum acess+the ebook+ another special book+ X New program most pubs prefer just to show the platinum membership part, then once they paid for the membership and log-in to your site, they are asked if they want to pay another 50$ for the 2nd product part. Because they must all share the same site and the same clickbank product description.
I was thinking about making a small store with some software programs on it that are somewhat related and try adding a shopping cart then direct them to the clickbank checkout.