Virgin Mobile is offering the prepaid 16 GB iPhone 5 for only $359.99 with free shipping. That’s the best price we’ve seen and the lowest price from this carrier by as much as $110. The discounted prices will appear once the item is added to your cart. For this offer, you must be transferring from another carrier. Virgin also offers unlimited Data plans starting at $30/month on Sprint’s 3G and LTE network.