How many of those valves do you think they sell? It’s likely in the hundreds or thousands, so a very low volume item. How many of them fail to pass the stringe

How many of those valves do you think they sell? It’s likely in the hundreds or thousands, so a very low volume item. How many of them fail to pass the stringent quality tests? The price includes all of the defective valves that failed QA/QC testing. You still need all of the engineering and tooling, but the costs are spread across a small number of units vs a larger volume product.