Weme via Amazon offers its Weme 4-in-1 Mini DisplayPort to HDMI/DVI/VGA Adapter Cable
, model no. WM-6354WH, for $15.99. Coupon code "S692XRLV" cuts that to $9.91
. Plus, Prime members bag free shipping
. (Non-members can spend $49 or more to qualify for free shipping; otherwise, it costs an extra $8.12.) That's $6 off and the lowest total price we could find. It features an audio output converter and supports video resolutions up to 1920x1200 and 1080p.