Deal Fisher via Rakuten offers the refurbished Winegard FlatWave Indoor HDTV Antenna, model no. FL-5500, for $30. Apply coupon code "VISACHECKOUT" and check out using Visa Checkout to cut it to $20. With free shipping, that's tied with last month's mention as the best price we've ever seen. (It's also $40 less than the best deal we could find for a new one.) It features 1080p content reception, up to a 50-mile range, USB cable, and adapter. A 1-year warranty applies, but it's unclear who backs it.
Note: New customers can use coupon code "TREAT4U" to reduce the price to $17.