I consider all cards I send you to be my responsibility until you receive them. Therefore I will send cards in the manner that suits me. It bothers me terribly when I see someone who needs $3.00 just to put a card in the mail. My cards will be mailed in a regular envelope, inside a card sleeves, taped between two pieces of cardboard. This can all be done for about 50 cents. I have been mailing both magic, and sports cards like this for years and I've never had any problems.

Of course if you would like cards to be mailed in another fashion, I am more than happy to do so, as long as you pay for all the costs associated with that (e.g. top loaders, bubble envelopes, extra postage).