Amazon Repricer For Products Which Im the Only Seller

Im looking for a way to change prices a few times a week a few % up and down on my products. Im not competing for buy box as I’m the only seller for my own branded products.

Ive checked out a few repricers but they seem a little expensive and mostly geared to buybox competitions. Is there any way to achieve this as I dont want to change the prices manually all the time.