For its newsletter subscribers only, newegg offers the Microsoft Natural Ergonomic Keyboard 4000, model no. B2M-00012, for $29.99. Coupon code "EMCJHJJ223" cuts it to $19.99. With free shipping that's $6 under our June mention and the lowest total price we could find by $8. This USB keyboard features a split-key layout, programmable multimedia keys, and an integrated palm rest.