The LTE model released first only comes in the Book's larger 12-inch size and sells for $1,300, but you can only buy them from Verizon. Pre-orders for the WiFi version start on April 21st, with the 12-inch going for $1,130 and the 10.6-inch for $630. Those will be available in select retailers nationwide on May 21st in silver while Best Buy will exclusively offer the Book in black.