So currently I'm Koru/Silver and I tried to book in LA in October too, just to see.

For me the FF gold seat was all $0 but the new Stretch in Purple was all $175, Exit rows in red were $150. Further back first two purple (preferred) rows in second part of plane were $39, next two after that were gold FF and finally back three two config aisle rows were $39 purple (preferred)

So disappointing it seems the big reduction in FF seats to make an extra buck or two, just makes PE more economic and worthwhile