Amazon.com offers the Logitech MX Vertical Wireless Mouse for US$84.
Features: Mx vertical is an advanced ergonomic mouse that combines science-driven design with the elevated performance of Logitech MX Series. the natural handshake position of MX vertical is designed to reduce wrist pressure and forearm strain associated with repetitive stress Injury (RSI) and carpal tunnel syndrome (CTS).* The unique 57° vertical angle has been optimized for an ergonomic posture without compromising a pixel of performance. Mx vertical features a 4000 DPI high-precision sensor, resulting in 4x less hand movement 1 and reducing fatigue.** and the cursor speed switch allows you to instantly adjust DPI speed and accuracy with the touch of a button. Mx vertical stays powered for up to four months on a full charge – and gets three hours of use From a one-minute quick charge.