I've got a 3 year old MIM J bass and I've been looking into upgrading my pickups. I've read a bunch of reviews about options that are out there (including the J pickups sticky in this forum), but my budget is pretty tight right now and I don't think I can afford to put $100+ into this upgrade. I saw a pair of used (2011, I think) Fender American Standard pickups for sale, and I thought it might be worthwhile to pick them up as a reasonably cheap upgrade. Two questions: 1. What would be a reasonable price for a pair of these? I've searched for retail versions of these to get a rough idea what they're worth but I'm not sure if I've seen them anywhere. The Fender pickups I've found online are called "original," "custom," etc., and I don't think any of those are the ones in the US standard basses. Are they available for retail purchase? 2. Would this upgrade make much of a difference? I know sound quality is very subjective, but I'd be interested in any thoughts people have. I like a nice warm bass sound. I mostly play jazz and pop/R&B, a little rock here and there but rarely anything I'd call hard rock. Most of the time, I play with all knobs at max and a wedge EQ on my amp. I might just wait until I can get something better, but I'm having some work done on my bass in a couple weeks anyway and adding a pickup replacement will be much cheaper if I do it at the same time.