TomTop offers the Andoer 1080p WiFi Action Sports Camera in four colors (Black pictured) for $21.99 plus $2.65 for shipping. (Make sure the US warehouse option is selected to see this price.) That's tied with our November mention and the lowest total price we could find now by $8. This 12-megapixel action camera features a 2" LCD, WiFi, 140° wide angle lens, and 1080p video recording at 30 fps.
Update: As a reader found, coupon code "8CAM" drops it to $20.23.