I was hesitating to shell out about 50 bucks for two plastic frames with two switches and a mini tiny pcb.
On the other hand, the value when you use them is great, so why not pay for it. It's great you can install em quickly and not fiddle with wiring schematics that are totally confusing, especially when you have to translate colour codes.
This one was easy enough, and sounds great, too. Plus it is reversible (unless you cut the pickup cables short like I did).