Originally Posted by
love_to_travel
I recently bought-up on a HNL-LAX flight where I would not have made the CPU and got the 150% PQM bonus. I think you're right though, who knows if that is SOP or just luck.
Was it an up-fare (typically offered at purchase or within 24 hours of purchase) or a buy-up at check-in? The former change the fare basis and will accrue based on the new fare.
If it was the latter, I think you did get lucky
There's a whole thread about buy-ups not leading to bonus mileage accrual.
united-refusing-award-bonus-pqm-rdm-cash-buy-ups