Apple is widely expected to unveil a new smartphone in the coming months, so it's no surprise that we're starting to see a flurry of specials on its older models. Verizon is knocking $100 off the iPhone 5, and T-Mobile will give you one for $0 with a trade-in.
In a similar fashion, prepaid carrier Virgin Mobile USA is hosting a promotion right now that will knock 15% off the price of the iPhone 4/4S. Now that may not seem like a very big discount, but it's big enough to land you a no-contract iPhone for under $300...