"Are you just out that money or does the card carrier help you get your money?"
Hi, Alice -I have a merchant account through Costco. My gateway (FastTransact - EZIC) is the best in the industry, with VERY strong fraud controls. In the last six years I have had lots of attempts by fraudulent shoppers, but not one chargeback or bad charge.
However ... before this account I had one with CardService. I got an order from a guy in Alaska (i'm in NY) for around $70.00. Shipped it, DC showed it was delivered - but the guy charged it back the following month. Said he never authorized the charge. I guess his kid or wife used his card without permission. He denied having the cuff bracelet - of course no mention of his wife or kid having it - so I never got it back, and they refunded his cash. So I lost the bracelet (they took his payment back), the cost of shipping it by Priority mail, a nice box AND they charged me a $25.00 fee. SO ... the answer is ... the customer or the credit card company will not lose a dime.
You will make MUCH more than you lose when you accept credit cards.