How much does this cost to the nearest dollar?

Ergotron – LX Keyboard Arm, Wall Mount Adjustable Keyboard Tray – Polished Aluminum
Complete your workspace Large 17.5 x keyboard tray comfortably fits full sized keyboards; retractable mouse tray accommodates any size mouse and saves space when not in use; pair with an LX Wall Monitor Arm to create a flexible, productive and ergonomic workstation Multiple mounting options Includes LX arm, extension, keyboard and mouse tray, wall mount base, mouse holder, wrist rest and attachment hardware; mounts directly to sturdy vertical surfaces, including wood studs, solid walls or to optional accessories Wall Plate or Track Mount Bracket Kit Large range of motion Provides 13 inches of lift and up to 35 inches of extension; prevent wrist pain or injury with 80 degrees of back-tilt, keeping your wrists in a neutral,

Price is $345.00
Price: $345