BlutekUSA via Amazon offers Prime members the refurbished Logitech Type-S Bluetooth Keyboard Case for Samsung Galaxy Tab S, model no. 920-006401, for $12.99 with free shipping. (Non-members can spend $49 to bag free shipping; otherwise, it adds $9.06.) That's $18 under the lowest total price we could find for a new model. (Most stores charge around $50.) This Bluetooth keyboard features Android shortcuts and auto wake/sleep.

A 90-day warranty applies, but it's unclear who backs it.