Each set features six designs (the set comes with two of each): "you can always return", "i bought one for myself", "you might want to open this in private", “i made it myself”, "happy birthday" (which includes check boxes for 1-20, 21-30, 31-40 and 40 plus) and "remember, it's the thought that counts."
I love these so much and I can't think of anyone who wouldn't.
Save yourself the trouble of writing out a long card for special occasions and buy a set of these cuties for $15.