Baseus 45W QC PD USB Type-C Car Charger (Banggood, Aliexpress: Model: BS-C20A (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Baseus PD3.0 QC4.0 Car Charger 45W | $9.10 | – |
 |
Baseus 45W Quick Charge 4.0 3.0 USB Car Charger | $15.98 | – |
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. One coupon is available. Cool!
Link: Banggood product page
1. ($17.99): 13f142
you should apply the coupon in your 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/feV
Old coupons (from the oldest to the newest): TTxBG10, aff7off, BG3CSUM, AFfbG10, BGBFAFF2019, BGCITYADS2019, BGBSCHQ13, BGVDay10%off, BG45WRA, BGAFF10OFF, bGhOnEy10, BGXMI15, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BG20CHARGER, BGMBCBLE, BGCuponation10
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Price history (for all/most countries) for Baseus 45W QC PD USB Type-C Car Charger is here. The lowest price was: $8.99.
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)).