Again, Price has nothing to do with sound. Can someone make something as good or better for less, why sure. There a differences though depending on who makes the product.
I imagine no body here has tried to manufacturer anything and sell it in a competitive market. It is not so easy. Everyone has an opinion on everything and most likely, no body has had the opportunity to do extensive comparisons using different components,
Try designing something, marketing something, getting parts, boxes, reviews, etc. What do you think that costs? No one in audio is getting rich, at least not many. That is why some of the favorite manufacturers are out of business today.
BUT there are high priced components that actually do sound much better. That I can prove. Our listening room is open in Northern New Jersey if anyone wants to come a play.
Happy Listening.