Amazon offers the Razer Tartarus Chroma Expert RGB Gaming Keypad for $49.99 with free shipping. That's the lowest price we could find by $30. It features 25 programmable membrane keys, 8-way thumb pad, and adjustable wrist-rest module.

Also available is the Razer Orbweaver Chroma Elite RGB Mechanical Gaming Keypad for $99.99 with free shipping. That's the lowest price we could find by $19. It features 30 programmable keys, 8-way thumb-pad, mechanical switches, and unlimited macro lengths.

Note: The Tartarus is expected to take one to four weeks to ship.