Yellow Deals via Amazon offers Prime members the Vaas Audio Foldable Bluetooth Stereo Headphones, model no. VABT20, for $17.99 with free shipping. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.23.) That's the lowest total price we could find for any Vaas headphones. Sales tax is added where applicable. They feature Bluetooth 2.1, microphone, and controls to adjust volume, accept calls, and skip music tracks.