I have just checked coupons. The lowest price I could get is 55.99 USD for P142K 22.5W 50000mAh Power (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Latest coupon code price check (UTC time):
Banggood (55.99 USD)
Banggood warehouse is located in China. Coupons for Awei P142K 22.5W 50000mAh Power Bank? Nope, there’re no coupons in Banggood. Good or bad price? This price is higher than average price (52.66 USD) for this item.
Link: Banggood product page
Price: 55.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG3bad01, BGCAPITALOS8, BG8FORMULAMX, BGCOUPERTBF8
(I don’t think these’re gonna work, but you can try ’em out anyway)
Aliexpress
Click here… to search for Awei P142K 22.5W 50000mAh Power Bank on Aliexpress
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for Awei P142K 22.5W 50000mAh Power Bank is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).