GoPro via eBay offers its factory-refurbished GoPro HD Hero4 Black Edition 4K Action Camcorder, model no. CHDHX401, for $234.99 with free shipping. That's $54 under our refurb mention from last October and the lowest total price we've seen. (It's also $95 under the best price we could find for a new unit.) It features 4K video recording, up to 12-megapixel photos, waterproof housing (up to 131 feet), WiFi, and Bluetooth. A 1-year GoPro warranty applies.