Can you give me an example of any business in the world that allows you to only pay them their cost for products? I'll wait...

Maybe while you're at it you should contact your ISP and tell them they're charging you more than what it costs to provide you internet so you deserve a refund, or maybe mcdonalds too, because surely they are also charging you more than what it costs to make the food

You call for him to review his business model? Their current business model is selling product for more than what it costs them. You want them to sell products for what is costs them. That is not a business, welcome to capitalism, read about it