Newegg offers the ROCCAT Kone XTD Max Customization Gaming Mouse, model no. ROC-11-810, for $89.99. Coupon code "NEPAXEAST21" cuts it to $49.99. With free shipping, that's $10 below our September mention and the lowest total price we could find by $23. It features a 32-bit Turbo Core V2 processor, eight programmable buttons, 4D mouse wheel, four clip-in 5-gram weights, and multi-color LEDs.