Earlier quoted context omitted.
Sellers already pay people to write reviews– and compensate for the product. How is this system any different? > If a seller wanted to keep farming reviews, they would now have to buy up the vast majority of their own inventory in the hopes of being selected. They already have 100 people buy their product and fully pay for it for a review.
It's different because it has Amazon randomly selecting who gets paid to write a review, and the reviewer doesn't have any incentive to lie since they get the $10 regardless. Sellers are currently paying people (in money and product) for 5 star reviews, which is exactly the problem I'm trying to solve.
Your system may have minor chance of success if there was no way for the sellers to contact customers.