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Buy.com has the Ergotron LX Desk Mount LCD Arm priced at $109.99. Shipping is free, there is no sales tax (except CA, MA, MD, NY, TN), and first-time Buy.com users can use this $5 off $100 coupon. This model clamps to your desk and can handle most LCD monitors up to 20 pounds. It comes with a five-year warranty.