It works like this: Reseller A sells the product for your recommended advertised price of $50, then reseller B sells it for $45 to compete with A, and then C sells it for $40 to compete with A and B. In no time at all, no one is making profit from selling your product and reorders disappear. Customers are now accustomed to the lower pricing and the process is irreversible. The product is dead and you need to create a new product. This is precisely the reason why so many companies need to create new product after new product month after month. It's a headache.