Avantek US via Amazon offers the Avantek Ultra Thin Digital Indoor TV HDTV Antenna for $13.99. Coupon code "WGU8SGV4" cuts that to $3.99. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $6.55.) That's $46 off list and the lowest total price we could find. It features a 30-mile range and 10-foot coaxial cable.