No, there are limitations set by you as the retailer that prevent a brand from changing your prices at any time. More specifically, a brand can only change your price if you have accepted a proposed MAP Agreement. Even then, only the prices of ASINs included in the accepted agreement can be changed by the brand. Furthermore, price changes or enforcements only occur if your price is below the accepted agreement price for a particular ASIN. Only then is your price changed to the minimum advertised price stated in the agreement. There is no other scenario that allows a brand to change your price.
