Who’d of thunk it, but your old, first generation, non-3G, iPhone is actually worth big bucks. A quick glance at eBay and Craigslist show that 8GB iPhones–many advertised as “unlocked,” “jailbroken,” “unlockable,” and “use on any GSM network”–are selling for between roughly $200 and $400. Not everyone is comfortable with using eBay or with the responsibilities that come with selling goods to other consumers. For this crowd, and for those who are looking to make a quick buck without the time-consuming hassles