Here is the shipping policy from SnSS. I hope this helps!
WITHIN THE US: Our stamps ship for a flat $2.95 no matter how many sets you order, but if your order contains paper or blocks the shipping will depend on the weight of your order.
US orders ship via USPS using either First Class or Priority Mail.
We offer FREE shipping for US orders of $65 or more.
OUTSIDE US: Our international shipping prices are based on weight. All international orders are shipped First Class International via USPS.
You may estimate your shipping cost with our shipping calculator found in your shopping cart.