As one of its daily deals, Amazon offers its Prime members the Logitech T631 Ultrathin Bluetooth Touch Mouse for Mac, model no. 910-003856, for $35.99 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, it costs an extra $8.38.) That's the lowest total price we could find by $14. It features OS X touch gesture support and Bluetooth pairing for multiple devices. Deal ends today.