Ending today, Groupon offers the GoPro HD Hero4 Silver Edition 4K Action Camcorder in Silver, model no. CHDHY-401, for $359.99 with free shipping. That's the lowest total price we could find by $8, although we saw it for $31 less last month. It features up to 4K video recording, up to 12-megapixel photos at 30 fps, waterproof housing (up to 131 feet), WiFi, and Bluetooth.