MacMall has a deal on the Apple Time Capsule units: 3TB for $230, 2TB for $170. There are the Apple equivalent of a NAS that offers automated backup to the hard drive built inside a wireless router. These are a generation old but with plenty of storage and speed.
Apple 2TB Time Capsule
Apple 3TB Time Capsule
Best Buy has recently posted Xbox One launch day pre-orders available for in-store pickup! The process works by ordering online and selecting a pick up location at check out. Most stores across the US seem to have them available for online order right now.
Check the console page at Best Buy here for more information.