Newegg offers the Logitech G900 Chaos Spectrum Wired/Wireless Gaming Mouse, model no. 910-004558, for $129.99 with free shipping. (Amazon has it for the same price.) That's the lowest total price we could find by $6, outside the offer below. (For further comparison, most merchants charge $150 or more. Additionally, in July we saw it for $80 more, but it came bundled with a $100 Dell gift card and PC game.) This ambidextrous mouse can be used either wired or wireless and features a 30-hour battery life, adjustable sensitivity of 200 to 12,000 dpi, RGB lighting, and customizable physical button layout.

A close price: Best Buy offers it for $132.99 with free shipping.