If you’ve been holding out on getting an iPhone because the monthly plans were too expensive, now’s your chance to get one. Starting June 29, Virgin Mobile will begin selling the iPhone 4 and 4S with monthly plans starting at $30–including unlimited data and messaging. So, what’s the catch? Well, you have to pay full price for the iPhone. The 16GB 4S will retail for $649 and the 8GB iPhone 4 will be available for $549. Still not a bad deal if you consider how much you’ll be saving on your monthly plan. Watch the video below of Sir Richard Branson explaining why Virgin Mobile is different than other cell phone companies.