Newegg.com has a Logitech M570 black 1 x wheel USB RF wireless laser trackball.  This item is offered at a price of $47.99 from the list price of $59.99.  That’s a total savings of $12, plus add a select extended warranty plan for only $6.99.

Plus, pay only $1.99 for shipping.  Additional fees may apply for shipments to APO/FPO, AK, HI and PR.