Prisync

TL;DR
After many failed attempts in E-comm (security products), we started using Prisync and suddenly we are selling and with a profit.

And for the long version -
We were trying few times with few advertising agencies to start our E-comm business (selling products online that we buy in stock anyway and therefor have a good price for).

Every attempt was finished after few month each on the losing side and each company gave us feedback for the failed attepts - feedbacl like "change the checkout", "change the design of the website" etc.

We did and still no success.

In the end we understood (after setting up presence in Amazon) that the main issue was pricing, we advertised for products we were not the cheapest in the shopping results so potential customers just went in (and we payed for that traffic), read about the product and went back to Google and bought the cheapest price that was presented.

So after a small research we came across Prisync and after we set up the API conection and the Smart Match feature suddenly we start selling!

What all the advertisers we had before didn't thought of or couldn't solve Prisync did - and in a very good way.

Didn't found one yet but I started using the API only resently.
As of now things work great from our side

being able to reach price history .
Interface is really simple and easy to use.
The communication of the team reaaly fast and qualified.
They lead you how to benefit from the system more.

Change of URLs should be controlled manually