$24.99 – WZ5020L DC-DC 50V 20A 1000W Buck Converter (Banggood, Aliexpress: WZ5020L DC-DC 50V 20A 1000W Buck Converter CC CV Step-down Power Module Adjustable Voltage Regulated Power Supply (the best price with coupon)).
According to my DB the lowest price is $24.99 for WZ5020L DC-DC 50V 20A 1000W Buck Converter (in Banggood). Go down and check coupons out. Remember to check price history if it is available. What is best price?
Latest coupon code price check (UTC time):
Banggood ($24.99)
Banggood warehouse is located in China. There are no coupons available at this moment in Banggood. The question is – is it a good price? Hmmm, price is higher than average (which is $19.99 right now), so better set price alert down below…
Link: Banggood product page
Price: $24.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): BG142c6e, BG589b2e
(I don’t think these’re gonna work, but you can try ’em out anyway)
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.
Price history and price alert
Do you need price history chart (for all/most countries) for WZ5020L DC-DC 50V 20A 1000W Buck Converter? There we go. The lowest price was: $19.99.
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)).