Newegg offers the GIGABYTE 5+1 Button Dual Lens USB Optical Gaming Mouse in Black, model no. GM-M6800, for $9.99 with free shipping. That's tied with our expired mention from three days ago and the lowest total price we could find by $9. It features adjustable 800/1600 dpi resolution (via the sixth button) dual lens technology, which purports to achieve higher precision, and teflon foot pads.