I'm not sure about the dimensions of the Ibanez pickups but how about Seymour Duncans? They have 3 different types, Vintage, Hot and Quarter Pounder and each P goes for $65 and each J goes for $58 which puts them right in the middle of your price range.
I cant really describe sound very well but check out the product descriptions-I would think one of their types would fit whatever style of music you're playing.
These prices are from bestbassgear.com which is where my Duncans (mm and 1/4 pounder P) and my bridge came from for the new custom that should be delivered tomorrow
They also have an Antiquity series but those are much more expensive (the P alone is $115!)
Good luck on your search.