Blue Raven has introduced its new Mail-In Service and Repair Kits for the iPod and iPhone. The Kits are designed to offer a flat-rate for iPod and iPhone service and repairs so consumers know the cost up front. Each kit includes a pre-paid shipping label and a box to mail the product to Blue Raven for repair; the company is promising a three-day turnaround on repairs, and will return the device by way of a two-day freight service. In addition, both…