You can create price alert here, copy coupons and view price history. Best price?
Input voltage AC 100-240V 50-60HZ, Output voltage 12V DC, Color Black, Rated power 120W
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I can’t tell you if this price is good – not enough records in my database, so I won’t judge. We have found one coupon for this product!
Link: Banggood product page
1. ($16.14): BGCarEle4
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGQH1001, BG80ca03, BGSCM11, BGCarEle5
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Tvird 120W 110V-220V AC to 12V DC Converter Power Adapter ($-3)
Price history and price alert
Not enough data to show price history chart… $12.99 is the only recorded price. It was not cheaper than that since we have saved it in DB.
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)).