Originally Posted by AdultKing

Pay per sale is much like putting all of your content behind an AVS. Whoever sells the key makes the money out of everyone elses contributed content.

So twenty content producers might upload thousands of dollars worth of content and one out of that twenty is lucky enough to get a pay per sale commission, while the buyer is laughing, he or she just got access to tens of thousands of dollars worth of content for $9 bucks.