Its pricy they keep like 50% from sales, but it depends on how much you are charging. I know a few people who makes loads from it. But the major catch is that its full of over priced shite that you dont really stand much chance of standing out from the crowd.
I have alot of content uploaded there at the moment that I will be making available for sale very soon, will let you know how I get on with it. But I expect that I will only have moderate sales from it