These cards are 4" x 4 1/2". I am selling them as a set of 4--2 birthday cards and 2 thank you cards. I have to sell cards as a set because this site has a $10 minimum. However, you can buy any combination of cards you see in my shop. Just send me an e-mail at email@example.com. I can add a custom item to my shop for you as long as it meets the $10 minimum. I also have an offer--buy 4 cards, get the 5th free (least expensive card is free). The individual price of these cards is $3.00. I don't charge for shipping within the 48 continental United States. If you live outside of that area, please message me and I can give you an estimate on shipping costs. Thanks for shopping!