Thumb Score: +29 sgxglobalusa via Amazon.com has Clip On Chromatic Guitar Tuner w/ 360 Degree Screen Rotation for $7.97 - $5.97 promotion code Z8YNJQFO = $2. Shipping is free with Prime or if you spend $35 or more. Thanks hashimto Deal Editor's Notes & Price Research: If you don't have Prime, there's a free 30-day trial with free 2-day shipping, video streaming & more available. This tuner has a 4.7/5 rating at Amazon.com.