Long time Lurker First time Poster!
Looks like Freddy's Waistbands Shirt n Stay is running a 50% off their normal price of $8.99. There's prime shipping on it (Shipped from Amazon directly). I paid full price for these Shirt n Stay products and they worked great. It keeps my shirt tucked in and it's not visible (like those weird garter leg things, which are the alternative). (Great for golfers and business people like myself) They can also go through washing and dry cleaning without coming out, and to remove, just put the iron on again and they peel right off!
Make sure to click the apply promotion and it takes 50% off your cart directly!