The amount of requests you get from the API is related to the Amazon
sales your traffic drives. If your visitors click on links that come
from your requests to the Product Advertising API (PA-API), go to Amazon
and make purchases, those purchases accumulate. When those purchases
get shipped to end customers, you earn advertising fees, and the request
rate we give you from the API goes up (until it hits a cap) based on
the total shipped revenue. We only use the shipped revenue that comes
from the URLs provided from the Product Advertising API to calculate
your request limit.
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) for every $4,600 of shipped revenue attributed to the associates account linked to your Product Advertising API account in a trailing 30-day period (about $0.11 per minute).
You can be sure your sales are being attributed to your calls to the Product Advertising API by checking for the following:
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