L.A. Computer Company offers the LMP Bluetooth Keypad 2 for Mac for $44.95 with free shipping. That's the lowest total price we could find by $5, although we saw it for $4 less last June. It connects to any Bluetooth-enabled Mac and can function as a stand-alone keypad or be attached to the Apple Magic keyboard with the included connecting bar. Features include Bluetooth 3.0, 23 keys, an ABS plastic case with aluminum-like coating, and Li-ion rechargeable battery.