Looks like we are back to the Spring/Summer schedule where there are few true Polaris aircraft scheduled and as a result of the 777HD and 752, premium seat availability is limited and expensive.
And given the 752 being prone to having maintenance the lovely surprise of recliner 737 or A321 being subbed in on occasion. Latest example is today’s 4:30pm SFO-EWR which is on a 737 Max-8. Or 11:50pm departure 10 days ago that got the A321.