I just tortured myself by putting loads of stuff in my basket (all of which I really want but don't need) just to see how much the customs charge would be and for just under £100 worth of stuff, it was £88 in total which included £15 in customs charges, free shipping and the 20% discount.
May be worth a look if you want any of the products not stocked by QVC - code is XOXO
http://tartecosmetics.com/
May be worth a look if you want any of the products not stocked by QVC - code is XOXO
http://tartecosmetics.com/