GoPro via eBay offers the factory-refurbished GoPro Hero3+ Silver Edition Waterproof Camcorder, model no. CHDHN-302, for $179.99 with free shipping. That's $10 under our June mention, $77 under the best price we could find for a new one today, and the lowest total price we've seen for this model. The camera features a housing that's waterproof up to 131 feet, 1080p video, and up to 10-megapixel photos at 10 fps. A 1-year GoPro warranty applies.
Update: Specs corrected.