Here's something to keep an eye on. They are temporarily out of stock, but as long as Amazon re-stocks and you get billed before 11/30/2011 the deal is valid:

3M Headlight Lens Restoration System on Amazon
$14.95
-$5.00 rebate form
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Final Cost $9.95*

* As long as you have enough stuff to buy from Amazon to equal $25, there will not be a shipping fee.