A few questions about SIM cards. Are SIM cards expensive in the US? How much per card? Do you have to re-fill them after a while? I've looked through ebay before, and all I could find was SIM cards that weren't activated (messaged the sellers, they told me), meaning you had to activate them before you can receive messages (which can be expensive if you're going for a lot of them). But I keep reading people saying they're buying sim cards off of ebay, and getting like 100 for 30$ and shit like that. Anyone have more info on this? I've also contacted the providers in my country, and they're pretty expensive (3 eur per card, plus paying 3 more euro to activate each, then an additional 3 eur per 3 months), so I need something foreign. Also, do these cards work abroad for receiving messages?