Read-only Amazon shopping intelligence: Top-100 BSR, product profiles, price history, comparisons.
Free
One server, in e-commerce. Read-only Amazon shopping intelligence: Top-100 BSR, product profiles, price history, comparisons.
E-commerce
Read-only Amazon shopping intelligence: Top-100 BSR, product profiles, price history, comparisons.
The rest either hold an API key issued by the publisher or ask for nothing.
Listed without a verification tick. Read the listing before installing.