Hello Ben,
here in europe we have several lines of PRL and PBL. But originally they all come from Asia.
In these lines (Benibachi, Ueno, Akaebinosato, etc) will not be selected according to degrees but primarily by color cover.
For one shrimp with good color coverage, even in the legs, is often called here sometimes about €700 (about $1000).
I have some PRL from the Akaebinosato line, but no highgrades. I hope the higher grades in colour coverage come through selection.
One example out of my tank:
Greeting from Germany
Lars