A lot of money for the average person to invest in a weapon they hopefully will never use. Best home defense is a pump shotgun loaded with birdshot no bigger than #5. At short ranges, it is devastating but it will not penetrate walls and offers very little threat to bystanders. That, the huge hole in the muzzle and the unmistakable sound makes it likely that an intruder will flee rather than confront an unknown quantity with a shotgun. It also doesn't require precision because any center mass hit is usually disabling if not fatal.
Any perp who busts into an occupied home should know his life is forfeit.