Pauls' TV offers the Mitsubishi XpanD Active Shutter 3D Glasses, model no. 3DG-X103 (pictured), for $59.99 with free shipping. That's the lowest total price we could find by $40. These battery-powered glasses are compatible with most 3D-capable Mitsubishi HD televisions from 2011 and later. Update: The price has decreased slightly to $59 with free shipping.
Pauls' TV also offers the Mitsubishi Active Shutter 3D Glasses, model no. X105BT, for $29.99 with free shipping. That's another price low by $19. They're compatible with 3D-capable Mitsubishi 842 Series HDTVs.