As one of its daily deals, B&H Photo-Video offers the Polar Pro PowerPole Battery-Integrated Pole for GoPro HERO Cameras, model no. PWR-POLE, for $44.99 with free shipping. That's the lowest total price we could find by $35. It extends from 17" to 30" and features a 5,400mAh battery, dual USB charging outputs, splash-proof port covers, and provides recording times of up to 10 hours.