ATC LLC via Amazon offers the Masione 10-Button LED Optical Gaming Mouse in Black/Red for $24.99. Coupon code "K5WTXK8H" cuts it to $14.99. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $8.28.) That's $28 off list and the best price we could find. It features a 1200/1600/2400/4800 DPI Switch and USB. Deal ends December 19.