I've had this pickup for a few years and it still works great. It usually goes for $180+, I'm selling it for $100 (plus shipping). The pickup is in the E-string side bridge adjuster (matching G-string side adjuster included). The only thing that's missing is the little foam piece you feed the wire through, but I assure you the pickup works just the same without it. You can install it yourself, but I would recommend having a pro do it.
For more info, visit the website:
http://www.fishman.com/products/details.asp?id=17