Price reduction is negotiable. A little is possible. Thank you for viewing. I am selling the trackball mouse MX ERGO with various extras. The main unit itself has been used about 4 or 5 times. Everything in the photos is included. The extras are a 3D-printed tilt stand and three balls (blue, green, and purple). The tilt stand has three different angles: 30°, 40°, and 60°, compared to the standard 20°. The tilt stands are usually traded on Mercari for around 3,000 to 4,000 yen each. A trackball mouse that provides comfortable operability with an ergonomic design. - Model name: MX ERGO - Brand: logicool - Color: Black - Main unit accessories: Box, USB receiver, USB cable, instruction manual, plate (20° tilt) Extras: 3 colored balls, 30° tilt stand, 40° tilt stand, 60° tilt stand Thank you for viewing.