Amazon has the Etekcity Scroll Endurance Wired Ergonomic Vertical USB Mouse with Adjustable Sensitivity on sale for $19.99!

Why this deal is hot:
Save 60% off -- that's $30.01 in savings!

What this does and why you need it:
This ergonomically designed mouse has a removable palm rest to reduce your hand and wrist pain from hours of playing time. There are two thumb buttons that can be used for back/forward browser navigation, is 600/1000/1600DPI adjustable and is USB wired. The high-resolution optical sensor has adjustable sensitivity for better accuracy and responsiveness. Its perfect for on the go at 10.4 ounces and 136 x 100 x 87mm.