Nothing designer is "worth" the cost. It has zero additional functionality. You are paying for a name. Unless you really love it and will make it a centerpiece around which you build your kitchen, then leave it out of the design.

Ask your plumber. They will encourage you to buy something that has readily available parts should anything need service.

They are beautiful. I had googled to see how much they ran after seeing the commercial, but too much for me.

They’re right in line, price wise, with other higher end Kohler faucets. Kohler makes quality fixtures. If you like it, and it’s in budget, go for it.