Michelle, That is a really nice thing to do for your DD. You can get Tracfones pretty cheaply and WalMart, Target, Sam's, but I don't know the cost there. If you have Dollar General stores, ours have Tracfones for $20. A better deal is on the Tracfone website. If you buy a $19.99 (60 minutes) card you get a free reconditioned phone. That and a referral would get 160 minutes and a phone for only $19.99. (plus shipping....I almost forgot that.)
Depending on when you buy a phone on the website, there are usually codes around to get extra minutes.
Good luck and congrats to you and your DD!
Anyone that needs a referral can contact me at fperkins2000@yahoo.com, or at fperkins@reliant.com, my work e-mail. I check that one all day, every weekday from 8-5 CST.