I have been using this stuff for over a year now. It is BEYOND awesome on a fairing. I sign up for their email and every patriotic holiday (memorial day, 4 of july, etc) they will email you a discount code of some kind. Usually free shipping....

http://www.jackiebluewear.com/

Well they did one out of the blue for

We want to help you get your ride ready for Spring!
Use the coupon code SUNNY for FREE SHIPPING
on your next BugSlide Value Kit or 64oz Refill bottle.
Offer expires April 30th, 2011
Here's a video of the product in use.
http://www.youtube.com/watch?v=KxLenCq6Lwg

I can attest to the quality of this product. It makes your bike feel BEYOND smooth. It's awesome.

And I usually only go thru a 16oz bottle a season. But that of coarse depends on how much you use.