Thinness: about 8mm, Size: about 160mm*80mm*7.3mm, Input current: DC 9V/2A MAX, Features: Fast Wireless Charging pad, Free gift: 1 * Type-C Data Cable, Interface: Type-C input, Material: Aluminum alloy + tempered glass + PC, with Intelligent Breathing Light, Color: Black/White/Special Edition, Compatible with Qi-enabled devices.
Basically copy coupon, view price history or create e-mail price alert. What is best price?
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.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. Uhm… There’s no price history (in my database) for this product right now.
Link: Banggood product page
1. ($20.15): BG9a4d5b
2. ($22.67): BGHONEY2110
3. ($24.19): 13f142
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGBASE21, BGBASE123, BGBASE25, BGPHONE20, 0e7f33, BGAFF10OFF, FBCOUPON1, BGCuponation10
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Baseus 15W Type-C Qi Wireless Charger ($-3)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: $20.15.
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)).