Check out this website! It is called "The Something Store" and it offers you to pay $10 to receive an item. The trick: you don't know what the item is!
This website seems to work pretty well from the number of items sent. I should talk about it to my marketing teacher who always told me "know what the consumers want". What if what they want...is not to know?
Now you "The Something Store" to answer this need. Amazing!