Amazon has acer Wireless Mouse for Laptop on sale for $9.98.

About this item:

This acer Wireless Mouse for Laptop utilizes a 2.4GHz wireless connection and a USB receiver for reliable operation. It features 6 buttons and an adjustable DPI of 1600, allowing for precise cursor control. Designed for medium to large sized hands, this computer mouse is compatible with PCs, laptops, and desktops. The mouse is cordless and utilizes USB connectivity. It is ideal for office use and general computer operation.