DirectDeals4U via Amazon offers the Mophie Juice Pack Air for iPhone 3G and 3GS in White, model no. JPA-IP3G-WHT, for $11.49. With free shipping, that's a buck under our August mention and the lowest total price we could find by $2. This battery pack and case purports to add 4.5 hours of talk time and features a standby/charging toggle switch, USB micro cable, status LED, and more.