Brainwavz Audio via Amazon offers the Brainwavz S1 IEM Noise-Isolating Headphones
for $24.50. At final checkout, the price drops to $22.05
. Plus, Prime members qualify for free shipping
. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping costs $6.15.) That's tied with our July mention as $57 off list and the lowest total price we've seen. Features include a 20Hz to 20KHz frequency response, flat cable, and six pairs of silicone tips.