Electronics Valley via eBay offers the GoPro HD Hero4 Black Edition 4K Action Camcorder, model no. CHDHX-401, for $349.99 with free shipping. That's $30 under last month's mention and the lowest total price we've seen. (It's also a current low by $30.) It features 4K video recording, up to 12-megapixel photos, waterproof housing (up to 131 feet), WiFi, and Bluetooth.