From my experience over the last year’s flights, which is not a lot, the PQP price seems to be in the range of $0.97 to $0.98/PQP, if you subtract out the mileage price. I guess it sounds like a good deal if you really need the extra PQPs to make it to the next level or keep your current status, which I am considering. Also when you consider that in order to get 500 PQPs by traveling you have to spend > $550 on a ticket (taxes included). There appears to be no taxes added when you buy PQP/miles through award accelerator.