Exwell via Amazon offers the Exwell Digital Tire Pressure Gauge for $29.99. Coupon code "VOMJGXFV" cuts it to $19.79. With free shipping, that's tied with our mention from three weeks ago and the lowest price we could find by about $20. It gives readings from 5 to 150PSI and features a digital backlit display and plug-type nozzle. Deal ends October 31.