Amazon, Best Buy discount Apple Watches to $199, plus $899 iMacs at B&H

Today's best deals include fresh price drops on Apple Watches, with Series 4 devices on sale for as low as $339 at Amazon and the Nike Apple Watch Series 3 discounted to $199 at Best Buy. Meanwhile, B&H has issued another $100 price drop on Apple's 2017 iMac 4K, bringing the price down to a record low $899, with 27-inch iMac 5K models falling to $1,399.