This Ultrasonic Bark Control Trainer falls from $26.99 to $13.49 when you apply code SUY4V5DW at checkout at Petacc via Amazon. Shipping is free when you use a Prime Account or a free Prime trial. Shipping is also free when you spend $25 or more. Otherwise, it adds $5.99. Even with shipping fees, that's the best price we found by $3. It's designed to stop barking by emitting a high-frequency noise that will automatically turn off after 10 seconds. Sales tax is charged in most states.