$2.99 – 250W PD Car Charger QC3.0 Fast Charge with Digital Display Plug Car Charger Socket Flash Charge Digital Display Car Charger – A.
You can get 250W PD Car Charger QC3.0 for $2.99 using coupon code (in Banggood). Price history, coupons and price alert are available on this page. What is the best price?
Latest coupon code price check (UTC time):
Banggood ($2.99)
Banggood warehouse is located in China. So I have checked for active coupons (all category coupons and old ones), but there was no working coupon in Banggood. What about the price? Looks like a good price to me (average is $4.53).
Link: Banggood product page
Price: $2.99
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGa9aec6, BG2446f6
(these coupons are old, so probably won’t work)
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for 250W PD Car Charger QC3.0. The lowest price was: $2.5.
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)).