I have just checked coupons. The lowest price I could get is $65.99 for Baseus A3 15000Pa Car Vacuum Cleaner (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Brand Baseus, Charging time 3-5h, Battery duration High suction force ≥17min / Standard suction force ≥ 50min, Battery power 28.8 Wh, Input 5V/2.1A (Max.), Battery capacity 4*2000mAh, Model No CRXCQA3, Name Baseus A3 Car Vacuum Cleaner, Rated power 135W, Noise <75dB, Charging port Type-C interface, Charging protocol Support QC3.0 fasting charging, Color Silvery/Black, Suction 15000Pa
Latest price update (UTC time):
Banggood ($65.99)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. Good or bad price? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal $56.82)
Link: Banggood product page
Price: $65.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGBaseusA30, BGCuponation10, 13f142, BGBaseusA32, BG30df7d, BGHONEY2110, BG10OFFAFF, BGBaseusA38, BGb4dbdf, BGwhielabel, BGBaseusA33, BG6c889d, BGHU0547, BG10OFFAFF1, BGCNBFAQ3, BGCNBAFRS, BANGGOODSD, ADMITAD2212, BGCityads10, Terence, Tabby20, 2203ActiesNL, BG1efeb0, 8Couponsde, MVC8SPRING, BG9dff6b, Cuponation9, BGCarEle4, BGAUGUST8, BGCAPITALOS8, BGCOUPERT8, BG8FORMULAMX, BGBFDAY8, BGNEWYEAR8, BGESJY8
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
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 Baseus A3 15000Pa Car Vacuum Cleaner? 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)).