Latest update shows that RIDEN RK6006 60V 6A Adjustable Bench Power Supply costs $33.59 (in Banggood). Go down and check coupons out. Remember to check price history if it is available. Do you want to know what the best price is?
RIDEN® RK6006/RK6006-BT 60V 6A 4 Digit Communication 360W Adjustable Digital DC to DC Step Down Voltage Bench Power Supply Buck Converter – RK6006
Latest price update (UTC time):
Banggood ($33.59)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. But wait a sec… Is it a good price? This price is higher than average price ($32.80) for this item.
Link: Banggood product page
Price: $33.59
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG589b2e, BGd44d41, BGca56a3, BG8e1347, BG8FORMULAMX
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Aliexpress
There’re some similar (or not) items on Aliexpress
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 RIDEN RK6006 60V 6A Adjustable Bench Power Supply? There we go.
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)).