Amazon’s website describes the process in detail. Basically, when an eligible customer follows your affiliate link and completes the ‘Bounty Action’, you get a special bonus. These bounty actions include signing up for a free trial of Amazon Prime, buying an audiobook on Audible, creating an Amazon Baby Registry, etc. The special bonus is not a percentage of anything, but instead a set dollar amount.
There is no warranty or guarantee of any kind with respect to the Program Operator system as far as reliability, stability, quality or dependability. This means that the Program Operator, or its associates is not responsible for any loss or damage incurred directly or indirectly due to the use of the Program Operator website, products, services, or any other facet of the system. This shall include, but is not limited to, any system malfunction, period of being inoperative or unavailable, loss of data or discontinuation of service, other inconveniences.
Additionally, you must either include the following disclaimer adjacent to the pricing or availability information or provide it via a hyperlink, pop-up box, scripted pop-up, or other similar method: "Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product." In the above examples, "Details" and "More info" would provide a method for the end user to read the disclaimer.