Use coupon and get DH-3005 Adjustable DC Regulated Power Supply 30V 5A for $55.99 (from Banggood). Go down and check coupons out. Remember to check price history if it is available. Best price?
DH-3005 High Precision Adjustable DC Regulated Power Supply 30V 5A with LED Digital Display Overcurrent Protection for Laptop Mobile Repair – DH-3005
Latest coupon code price check (UTC time):
Banggood ($55.99)
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now… I think you want to know if the price is good. Maybe there’re no more promotions for this item, because current price is higher than average (which is equal $51.36)
Link: Banggood product page
Price: $55.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG30cdbd, BGe245a9
(there’s a little possibility that old coupon will work)
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for DH-3005 Adjustable DC Regulated Power Supply 30V 5A.
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)).