[tomkarlo]

You're assuming that the cost of goods sold (the price minus the margin) is a reliable indicator of the value you receive in the final product. That's a really questionable assumption given that the whole idea of company that converts raw goods into finished consumer products is to maximize the amount of value they add onto the raw cost of making the item.

You're basically saying you prefer to buy from the company that adds relatively little value to its products in the form of good design, efficient production or good sourcing of raw materials.

Let's say a company found a way to create goods with negative raw goods costs - such operations do exist, usually by converting trash or waste into a desireable product. (E.g. sewage into fertilizer pellets.) Is that a less desirable product than one that has a lower margin?