GearBest offers the Dome G30B 2.7" 1080P HD Dual Dash Cam for $36.99. Coupon code "G30BDN" cuts it to $30.99. With free shipping, that's the lowest price we could find by $114. It features dual cameras, IR night vision function, and seamless loop-cycle recording function. Deal ends July 31.
Note: It ships from China and may take up to seven weeks to arrive.