Re: Ibanez PowerSound pickups
it's all a matter of taste, but i agree, the powersound pickups are definitely the lowest quality pickups ibanez makes. however, i'd like to ask how long you've been playing? the grg series is pretty much entry level. if that's where you are in your playing, then it's all good because you probably won't notice much of a difference (at least until you get better). if you are an intermediate or advanced player, then i'd say look for a different guitar. build quality and materials on the grgs are quite poor, but decent for entry level players.
that being said, 450USD sounds outrageous, especially used. i'd offer him $150, and most of that is due to the upgraded pickups. no more than $200