DailySale offers the Posture Neck Pump Cervical Disc Hydrator for $58. Coupon code "Exclusive10" drops it to $52.20. With free shipping, that's tied with our mention from a week ago and the lowest total price we could find by $13, outside of the mention below. It purports to relieve back pain and stiffness and correct posture.
Note: The countdown timer on the product page resets daily; it does not reflect an actual expiration time. Also, a close price: MiTrendz via eBay has it for $52.99 with free shipping.