Dealing with Amazon Product Advertising API Throttle limits

They have updated their guidelines, you now have more requests when you sell more items.

Effective 23-Jan-2019, the request limit for each account is calculated based on revenue performance attributed to calls to the Product Advertising API (PA API) during the last 30 days.

Each account used for Product Advertising API is allowed an initial usage limit of 8640 requests per day (TPD) subject to a maximum of 1 request per second (TPS). Your account will receive an additional 1 TPD for every 5 cents or 1 TPS (up to a maximum of 10) for every $4320 of shipped item revenue generated via the use of Product Advertising API for shipments in the last 30 days.

Source: https://docs.aws.amazon.com/AWSECommerceService/latest/DG/TroubleshootingApplications.html

Here is the latest on request limits that I could find, effective Sept 3rd, 2012.

If your application is trying to submit requests that exceed the maximum request limit for your account, you may receive error messages from Product Advertising API. The request limit for each account is calculated based on revenue performance. Each account used to access the Product Advertising API is allowed an initial usage limit of 1 request per second. Each account will receive an additional 1 request per second (up to a maximum of 10 requests per second) for every $4,600 of shipped item revenue driven per hour in a trailing 30-day period.

https://affiliate-program.amazon.com/gp/advertising/api/detail/faq.html

I believe they have changed it. Per this link: https://forums.aws.amazon.com/message.jspa?messageID=199771

Hourly request limit per account = 2,000 + 500 * [Average associate revenue driven per day over the past 30 days period]/24 to a maximum of 25,000 requests per hour.