GearBest offers the Xiaozhai BoboVR Z4 VR Headset for $45.02. Coupon code "LHDVR9" drops it to $28.99. With free shipping, that's $32 off list and the lowest total price we could find. This headset is compatible with smartphones up to 6" and features a 120° field of view.

Note: This item ships from mainland China and may take three to four weeks to arrive.