*HOT* $1/2 Mountain Dew Coupon!December 7, 2011 by Mitchell Wischmann This post may contain a link to an affiliate. See my disclosure policy for more information. Coupons.com released a very rare $1/2 Mountain Dew 20 oz printable coupon today! You should print this one as soon as possible; this coupon won’t be around for long! Please note that it is listed as $1/1, but it will print as $1/2.