Cell bikes currently have free sunglasses, all you have to do is pay the postage, which is around $9. I believe you can add other items to the same cart and postage is still around $9, there are a few other bargains on thier specials page too (http://www.cellbikes.com.au/products/Todays-Special).
"One FREE Pair of Protector Glasses! Just Add to Cart and their yours! Online Only and 1-FREE Per Order Only!"