Replacing a SIM card on a lost/stolen AT&T phone
Say your AT&T cell phone gets lost or stolen. You have a spare cell phone lying around, so all you need is a new SIM card. You call AT&T for the SIM card and they will ask you to shell out $25 for it.
For a better price, go to eBay and you will easily find someone willing to sell you the same card for $5-$7 (including shipping). Once you get the SIM card, put it in the old phone and call AT&T’s customer service to activate it. Net savings: About $20.