Well, I think lawyers in class action suits typically work on contingency, so there wouldn't be any up-front cost to suing, and they would just take a big chunk

Well, I think lawyers in class action suits typically work on contingency, so there wouldn't be any up-front cost to suing, and they would just take a big chunk of the settlement or judgement instead as a fee. However, as is the trend nowadays, Amazon's Conditions of Use[1] include an arbitration clause, so that will probably make it rather difficult to bring a suit anyway. EDIT: clarification [1]: https://www.amazon.com/gp/help/customer/display.html?nodeId=201909000 https://www.amazon.com/gp/help/customer/display.html?nodeId=...