Weme via Amazon offers its Weme 3-in-1 Mini DisplayPort to HDMI/DVI/DisplayPort Adapter Converter, model no. LYSB00NND5QWI, for $12.49. Coupon code "L6A5ECDD" drops it to $6. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $8.09.) That's $6 off list and the lowest total price we could find. Compatible with Thunderbolt 2, it supports video resolutions up to 1920x1200.