Thanks Reba- that explained it a bit better than my example lol.
In those cases, no it doesn't cost a dime to replace the cards. Easy to do either online or at the social security office. In the case of Identity Theft-- here's info on how and why you would need to replace or get a new number. No mention of cost.
http://www.wikihow.com/Get-a-New-Social-Security-Number
(sorry- I don't want to post 5 posts in a row lol)
Calvin- I want that button! Quack!