LightInTheBox offers the Feiyu G5 3-Axis Gimbal for GoPro Hero5 for $140.08 with free shipping. That's $12 under last month's mention and the best price we've seen. (It's a low today by $59.) It's splash-proof and features eight hours of run time.

Note: This item ships from China and may take up to three weeks to arrive. The countdown timer on the product page does not reflect an actual expiration time and resets daily.