Check it out here:
http://extras.ebay.com/
Scroll to the bottom and you will see "Beyond the Buy: Ebay Extras"
There are two tabs on the left-hand column: (1) Coupons, (2) Free Samples
There's quite a lot of free samples. Make sure you click on the grey arrow on the right side of the page to see more free samples offer.
Current free samples include:
Dove Daily Treatment Conditioner: http://www.dove.us/#/haircare/free_sample.aspx
Shout Color Catcher: http://www.shoutitout.com/coupon/06-10-shoutsample/
Cream of Nature Shampoo: http://www.cremeofnature.com/nature/creme_of_nature_new_fragrance_shampoo_promotion.html
Tampax: https://www.beinggirl.com/en_US/sampling_teen.jsp?sourcetype=ygirl&source=beinggirlnav
etc...
