A really cheap phone plan from AT&T for the iPhone 3GS?

I'm currently looking at getting a cell phone, and I asked if I could have an iPhone. I was told that my family had an old iPhone 3GS, a 4, and I believe a 4S. I was wondering, if anyone knew of a very cheap plan for the iPhone 3GS? I was looking at somewhere around 30-60 minutes a month, unlimited texting, and a pretty low internet data plan. If anyone could help, that would be great!

AT&T and cheap do not mix. I think 450 minutes, 300mb of data was around $80 dollars or something. T-mobile has $50 unlimited everything plans with no contracts and they are getting the iphone 5 on the 12th.

  • Will I be able to unlock my iPhone with a home phone plan instead of a wireless plan? I don't have a wireless plan with AT&T but I have a home phone plan does that count towards unlocking requirements? And also can I use a mildly cracked screen as a replacement screen on my iPhone?
  • Where can i get a really really cheap Iphone 4, that is in immaculate condition? I've been looking for an iphone 4 for a while now, and i've tried ebay+amazon but nearly all the listings are either too overpriced or are in a damaged condition, i really really would love an iphone too and i have a budget of atleast £40.00-£50 i know that its really not alot but i really really would love an iphone that is in immaculate condition and is really cheap, help please?
  • Where can I find the iPhone 4 really cheap? I want the Apple iPhone 4, since the 5 just came out I was wondering what store I can find it really cheap? But I don't have an upgrade until November so I want the phone now. Is there any way I can find it cheap with no upgrade? At an actual store, not ebay.
  • What Are Cheap Things On Amazon And Why Are They Cheap? On Amazon.com I've noticed that some things are sold for very cheap (like iPhone cases) but other things like clothes and shoes seem to be full price. What are categories or things that are sold very cheap on Amazon? Why are some things cheap but others full price? Also, how can some things be sold for so cheap when they retail for way more?