TigerDirect offers the Thermaltake Tt eSports Saphira Gaming Mouse in Black, model no. MO-SPH008DT, for $31.99. This $20 mail-in rebate cuts it to $11.99. With around $4 for shipping, that's the lowest total price we could find by $17. This USB mouse features five buttons, a maximum 3,500 dpi, and customizable 4.5- to 22.5-gram weight. Rebate expires February 14.