I offer combined shipping service.
Here are the current rates for combined shipping.

Canada:

For value < 20 $ (PWE) :
1-4 cards: 2.00 $
5-9 cards: 2.50 $
10-19 cards: 3.00 $

For Value 20 to 100 $ (Bubble mail with tracking number) :
< 45 cards = 8 $
> 45 cards = 14 $

For value > 100 $ : (Bubble mail with tracking number) :
< 45 cards = 10 $
> 45 cards = 14 $


International buyers:

Import duties, taxes, and charges aren't included in the item price or postage cost. These charges are the buyer's responsibility.