Gigabyte Dual Lens Gaming Mouse for $10 shipped. That is $8 (44%) off the regular listing and the current lowest price. It features soft rubber grips, a 2-level sensitivity switch and 1600 DPI High-Definition Optical Technology that “delivers 2-4 times the sensitivity of standard optical mice for smooth and precise tracking.” Amazon reviewers give this gaming mouse a solid 4.2 stars.
Gigabyte Dual Lens Gaming Mouse with 1600 DPI High-Definition Optical Tracking: $10 (Reg. $18)