Looking for a price increase check app for Amazon

Hello,

I have been looking for an app possibly free but if a good one willing to buy (no monthly subscriptions), that monitors amazon.de prices and lets me know if Amazon increases the price.
I have found many apps that let you know when prices are lowered, I need the opposite.

I sell products that I buy on Amazon, and if Amazon increases the prices my margin goes down or I even can make a loss.

Does anyone know of anything?

PS: If I chose the wrong forum, I apologize, this is my first...

Looking for a price increase check app for Amazon

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