Exwell via Amazon offers the Exwell Digital Tire Pressure Gauge for $29.99. Coupon code "6QOBDDLT" cuts it to $20.99 $19.79. With free shipping, that's the lowest price we could find by $12, although we saw it for $1 less two weeks ago. It gives readings from 5 to 150PSI and features a digital backlit display and plug-type nozzle.