Meritline offers the refurbished HP Link-5 Wireless Optical Comfort Mouse, model no. LB420AA#ABA, for $6.99. Coupon code "MLCKY27GNL1" cuts it to $4.99. With free shipping, that's $2 under our fall mention and $10 less than the lowest total price we could find for a new unit. It features an adjustable optical sensor, three buttons, and a scroll wheel. Two AA batteries are required (not included).

Note: No warranty information is provided.