Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Working Voltage: DC 11.1-12V, Inflation speed: 30-60L/min, Pressure gauge accuracy: soll 0.5PSi / can show the remaining electricity, Maximum inflation pressure: 11Bar/150PSI/1025kpa, Power: 650W, Charging time: 1-2 hours, Maximum current: 10A, Inflation Hose length: 150mm, Key battery capacity: 1500 mAh
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($39.99): BG72329c
2. ($77.21): BGLMQ15
3. ($79.94): BGSCM11
apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG3c2571, BG5840be, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, BGAUTO22, BGdcbfa8, BG6e6193, BG8ReviTrage, Cuponation9, 9OFFSUMMER, BGCarEle4, BG5e17fc, BGCarEle5, BGa01e3c, BGd9072c, BGCAR639
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for 12V 150PSI 650W 60L/min Air Compressor Pump.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).