For its newsletter subscribers only, newegg offers the GIGABYTE GM-M6800 5+1 Button Dual Lens USB Optical Gaming Mouse in Black for $14.99. Coupon code "EMCXMXM72" cuts it to $9.99. With free shipping, that's the lowest total price we could find by $8. (Amazon charges the same with free shipping for Prime members.) It features adjustable 800/1600 dpi resolution (via the sixth button) dual lens technology which purports to achieve higher precision, and teflon foot pads. Deal ends August 14.