How do you evaluate "quality" without a standard though?
Some are easy, like pastels that don't brown out over time - and there are a few of those and they should command a premium price.
Similarly if a line of black pastel or cinnamon could be identified that did not have the duck-billing or kinking issues, or a line of spider that didn't wobble, then that's another potential standard.
Moving in this direction creates added value for owners, no different from other industries. As an example a successful racehorse or show horse will have a higher value as a performer and breeder than the backyard hack used for the occasional trail ride. Both critters have minimum care requirements, one is just more expensive.