Chicago - T-Mobile Store at ORD?

Normally when I travel back to the States, I use a pre-paid cell number/SIM card for personal calls so my friends and family can call me on a local number. I've been trying online for two days now to reload (since it's been however many days, of course my credit expired), and I simply can't do it from Holland.

I'll be at O'Hare for an ungodly 4 hours tomorrow. Any recommendations on where to buy a T-Mobile pre-paid card? Is there a kiosk somewhere? Is this something Hudson News would have?

Thanks in advance. Also: if you're at O'Hare on Sunday from 2-6, I'm happy to sponsor you for the RCC.

There is a technology shop between c and f that sells prepaid sim cards. No clue on the cost. There is a target near ohare that you could possibly take a cab to and buy a phone from as well.

There's a t-mobile store just short of the target on mannheim, in a building with a starbucks and potbelly across from allstate arena.