Best Buy offers the refurbished Microsoft Natural Ergonomic Keyboard 4000, model no. B2M-00012, for $14.99 with free shipping. That's $9 under our February mention of a new unit and $22 under the lowest total price we could find for a new unit today. Sales tax is added where applicable. This USB keyboard features a split-key layout, programmable multimedia keys, and an integrated palm rest.

Note: No warranty is provided.