Yep. Current return prices in WTP are ~£900 for March, given OP wants just one leg in CW I doubt a POUG (if available) be £1,400. Indeed I can’t see more than one POUG to USA on the POUG wiki be more than £700.

Or just to throw something else in the mix, booking CW one way w/o POUG adds ~£700 if you want to guarantee a seat