On another note, many sellers are willing to risk the $8 loss to save their buyers $8 in shipping.
How many times are you going to have to eat
the cost of the card, compared with how much more international business you drum up?
That said, where do you draw the line. Say, a buyer wants a $30 card mailed first class..? Or four $8 cards. It does get complicated. It is much simpler to set your price and not negotiate each $8 sale, as it seems is your MO.
But your prices are clear. $10.95 to belgium. If he isn't willing to pay that, you might get it removed.
The technical requirement has always been that you get the neg removed if a buyer fails to respond to a reminder about an unpaid item. The buyer responds saying he won't pay, and you're left with the neg, in many instances. BUT there's always a higher authority. A half hour arguing probably isn't enough. It's taken me that long just to get a $2 FVF back in the past, where a NPB replied, but didn't pay. But I got it. Most sellers would rather lose $2 than have a neg.
Again, Good Luck! keep us posted.
Must use Buy It Now and PayPal.
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And that is the primary reason for me only doing store inventory. They want it, they buy it, they pay for it. Case closed. 
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