Each quality tier has a corresponding market. How do we judge which market fits our product?

The starting point for judgment is not your product specs, but what pressure the buyers you're targeting face in that market. High-quality products suit buyers with strict reliability requirements, high switching costs, or certification needs—for example, medical devices, industrial equipment, or importers protecting their brand reputation. Low-price market buyers care about delivery certainty and lowest total cost; quality just needs to pass the threshold. The wrong approach is to assume "good quality naturally attracts discerning customers." You need to first describe what your target buyer looks like, where they source, what their decision process is, then work backwards to see if your product positioning and pricing strategy align with that buyer's logic. Without this step, high quality is just your own standard, not the market's value.