Minger Direct via Amazon offers the AlierGo Bluetooth Over Ear Headphones for $39.99. Coupon code "7PGKWWKD" cuts it to $19.99. With free shipping, that's $2 under our mention from two weeks ago, $20 off list, and the lowest price we could find. They feature Bluetooth 4.1, up to 22 hours of operation per charge, and on-ear controls and mic. Deal ends July 31.