Leekoo via Amazon offers the Leekoo Elite Mechanical Tire Pressure Gauge for $19.99. Coupon code "PBEOMFSA" cuts the price to $9. With free shipping for Prime members, that's $11 off list and the lowest price we could find. It features a 2" glow dial with a 60 PSI single increment scale, a gear-style protective guard, and 360° swivel chuck.. Deal ends June 30.