AutoMind via Amazon [amazon.com] has Haitzu 150PSI Tire Inflator Air Compressor on sale for $19.99 – 50% off when you visit the promo code page to activate [amazon.com] (or apply code G9ELVE9M or F8OFKPGD at checkout) = $9.99. Shipping is free w/ Prime or on orders $35+.
Note: Amazon promo codes don’t always apply seamlessly. If you run into this issue, refresh the page, re-enter the code, or revisit the cart page.