WTB: AT&T Unlimited Data Plan Sim Card....Where can I find these?

[rshores84]

Hey guys,

I'm new to the forums and was just wondering if you guys knew where the unlimited grandfathered AT&T sim card?

I'm finally getting an iPad, but can't figure out what carrier to use for the data plan and then I heard about these unlimited plans for 29.99...

Thanks for any help you guys can provide.

Randy