Gooloo via Amazon offers its Gooloo Digital Tire Inflator with Pressure Gauge for $29.99. Coupon code "AGSRSP8G" cuts that to $17.99. With free shipping, that's $2 under last month's mention, $12 off list, and the lowest price we could find. It inflates tires when connected to an air compressor (sold separately) via the included quick-connect 1/4" NPT fitting. Two AAA batteries are required, included. Deal ends September 24.