Biotherm
Details: this is what i do, above $50/purchase free shipping (w/2 free sampler), and usually free X and Y.... if you are buying more than $50, i will rather make it $100, but pay them in 2 separated bills. So, not only you get 4 different samplers, and you get 2 gifts.... (note-free samplers are only for member, so sign up for free!)
Mankind Direct Ltd UK
Details: GIVE 10% OFF