Mirenesse 'free' make up trial - just pay shipping - shipping will cost you about 45-65% of the item cost.
Not sure how long this offer is up for - but while its there you can get yourself a bunch of free trial cosmetics, lotions and potions at just the cost of postage.
Whats pretty good here is that its not just one product, its 50. Not sure if you can trial all 50 of them or not but there's no reason why not. The offered products cover face make up, eye make up, lip make up and skincare.
They also appear to be rotating the stock in there as they go and as lines run out.