We’re asking that our Canadian sellers pay close attention when sending cards to us via UPS Standard Service. If you specify the value to be more than $200, there is a customs brokerage fee of $24.75 due at delivery.
Here’s a link that breaks down the entry preparation charges for importing into the U.S.
http://www.ups.com/content/us/en/resources/select/receiving/customs/fees.html
Make sure you check this out before sending, because you’re ultimately responsible for that fee.
Hope this helps!

I am considering sending some cards from the UK to be sold on your website. Is this ok? Any advice?