historical US mint prices information?

Does anyone know where I could see what past coins actually sold for at the US mint? I have bought and been given various proof sets and commemoratives over the past 20 years and I was wondering what some of the coins actually cost when purchased from the mint. Also another newbie question, how do you go about putting a picture in a post on this site? I tried to attach a photo and was unable to do so.
Thanks
Thanks
0
Comments
I know that the 2007 Red Book has them.
The name is LEE!
Edited to add: Welcome to the forum, and yes, the 2008 Redbook also has issue prices for proof and mint sets.