You can create price alert here, copy coupons and view price history. You probably want to know what is the best price?
9V/ 1.7A, Silver, Output Power: 5V/ 2A, Material: PC+ Silicone, Red, Color: Black, Suitable Size: 4.0-6.5 inches, Total Power: 10W Max., Product Size: 112*105*105mm
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. We have found one coupon for this product!
Link: Banggood product page
1. ($29.43): BG9a4d5b
put item in your cart and apply coupon code there 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): BG2105, TTxBG10, 2019SPEDM, BG3CSUM, BGBSCH13, bgssaff9, AFfbG10, 15holders, BGBASE123, 0e7f33, FBCOUPON1
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for Baseus 10W Qi Wireless Car Charger.
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)).