I’m sure the commenter meant well. You said “In Europe, a 40-cell braille display starts a 6k.” Which to me means that the most low quality, cheapest device starts at 6k.

Now i learn from you that that low quality device is so bad that you consider it a separate product class in itself. Can you tell us more what does it lack? In other words what features are you looking for when you are looking for a 40-cell brail display? (What is the minimum quality for it to be a “car” in your analogy?)