What was your diagnostic procedure?
All that's in the pickup is a coil of wire. If you read resistance with a multimeter in a similar range to the working pickup, then the pickup is not your problem. It's easy for there to be problems with the cable or the connector too which would be less expensive to fix.
Given the facts of your old thread, I would think that it's much more likely that you've had a failure in one of the EQ boards (or again, possibly a bad connection).
If you dare, pull the upper back plate (the one with the trimpot holes). You'll see three connectors on the bottom edge of the board which are your pickups and hum-canceller. Try swapping the outer two connectors. If the problem moves to the other pickup, then your problem isn't the pickup, it's the electronics.
The kind of noise you described in the earlier thread really sounds like a problem with intermittent power to the electronics, a bad jack (if you're using the 1/4) or it could be a component failure on the EQ board.
If the problem is an intermittent connection, then it shouldn't be that expensive to fix. A component might be expensive, an EQ board replacement would be costly.
If you really need to get a new pickup, I'm sure Alembic can do something for you, but I don't even want to think about how expensive that might be. Normally, you'd probably want to replace both pickups and the canceller which are a matched set (gulp).
You ain't gonna find anything that going to help you out on eBay.
Good luck,
David Fung