Gooloo via Amazon offers its Gooloo Digital Tire Inflator with Pressure Gauge for $29.99. Coupon code "OJLPDXFM" cuts that to $23.99. With free shipping, that's tied with our March mention, $42 off, 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 May 20.