Ugreat via Amazon offers Prime members the
Hopday U8 Bluetooth V4.1 Wireless In-Ear Sport Headphones for $23.99. Coupon code "98AMEN8A" cuts it to
$17.99. With
free shipping, that's the lowest price we could find by $14. Features include IPX7 rated water resistance, built-in microphone, CVC6.0 noise cancellation, and up to nine hours talk time.