Right now the best price with coupon code for 1000A 8400mAh Car Jump Starter with Air Compressor is $75.59 (in Banggood). You can create price alert here, copy coupons and view price history. Best price?
Latest coupon code price check (UTC time):
1000A 8400mAh Car Jump Starter with Air Compressor Power Bank Portable Pump Wireless Inflation Emergency Battery Booster
Banggood ($75.59)
Banggood warehouse is located in China. What about the price? This price is higher than average price ($60.32) for this item. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
Price without coupon: $76.99
1. ($75.59): BGAMMT03
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): BGCarEle5, BGb39492, BGSCM11, BG845979, BGLMQ15, BGCAR639, BGNEWYEAR8, BG5d589a
(I don’t think these’re gonna work, but you can try ’em out anyway)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for 1000A 8400mAh Car Jump Starter with Air Compressor? There we go.
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)).