That's a related point but not exactly the same one I was making. Not being able to tell the difference is one thing (your point) and not caring much or at all about the difference is another (my point).
A couple of more examples, where I'm in the "cheap" customer category this time: cars and clothes. I could afford to spend at least a few times more than I actually spend on cars and clothes, but I choose not to do so simply because the extra cost wouldn't buy me anything that matters significantly to me. It is not that I cannot see and understand the difference between, say, a $25,000 car and a $75,000 one; it is simply that cars don't interest me beyond their basic function of taking me from one place to another reasonably efficiently, comfortably and safely. They are not much different from elevators in my mind, just metal boxes where you wait until you are where you wanted to go.
Similar comments for clothes and fashion.
But, and here's a big difference. I don't think or tell people who buy $75,000 cars that they are fools or are being ripped off, and I don't bash companies that sell $75,000 cars for overcharging their customers. I understand that the extra $50,000 costs and buys something that other people care about even if I don't.
-Ww