AutleyDirect via Amazon offers its Autley Wireless Ergonomic Vertical Optical Mouse in Black for $13.99. Coupon code "6VQY4F2N" cuts that to $10.59. Plus, Prime members bag free shipping. That's a slight drop from our mention from a month ago, $19 off, and the lowest price we've seen. It features 1-button switching among three DPI settings (1,000, 1,200, and 1,600), a 2.4GHz receiver, and nonslip coating. Two AAA batteries are required, not included.