I'm going to be in the US for a couple of weeks (I'm staying at an aunt's so I can ship things there) and was looking into buying a SIM card just for making and receiving some local calls.
I have a phone (Nokia 5220) that I should be able to unlock (by my local carrier since I've had it for over a year).
I'm just looking for the cheapest option...
If I buy this TMobile SIM card, which rate would I be charged? It's not clear to me from that page if the SIM corresponds to a prepaid plan or how that works.
If I were to buy a SIM card from ebay, I would get a non-local number, right? Does that matter (cost-wise)?

I don't know if it's more practical to just buy a cheap prepaid phone but I'd like to avoid that if possible.
I'm just getting more confused every time I try to research this and I'd appreciate any help...