Ending tonight, Newegg offers the Microsoft Natural Ergonomic Keyboard 4000, model no. B2M-00012, for $19.99. Apply coupon code "VISACHECKOUT" and check out via Visa Checkout to cut the price to $17.99. With free shipping, that's tied with last month's mention as the lowest total price we've seen this year. (It's a current low by $17.) This USB keyboard features a split-key layout, programmable multimedia keys, and integrated palm rest.