$46.99 – RIDEN DPS5020 Digital Control Power Supply (Banggood, Aliexpress: Output current: 0-20.00A, Fixed hole center distance: 86mm / 64mm, Output voltage resolution: 0.01V, Output current resolution: 0.01A, Open size: 71mm*39mm, Output voltage range: 0V-50.00V, Display module size: 79*43*41(mm) (L*W*H), Output Current accuracy: ± (0.5% + 2 digits), Product Weight: about 222g, Power module size: 93*71*41(mm) (L*W*H), Output power range: 0-1000W, Input voltage range: 6.00-60.00V, Length of connecting line: 200mm, Output Voltage accuracy: ± (0.5% + 1 digit) (the best price with coupon)).
According to my DB the lowest price is $46.99 for RIDEN DPS5020 Digital Control Power Supply (in Banggood). Just check coupons out (with price alert and history). What is the best price?
Latest coupon and price update (UTC):
Banggood ($46.99)
Banggood warehouse is located in China. There are no coupons for this product in Banggood. I think you want to know if the price is good. This price is higher than average price ($43.59) for this item.
Link: Banggood product page
Price: $46.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGCuponation10, 13f142, BGHONEY2110, BG551cda, BGd0b05d, BG2589f4, 00c906, ADMITAD2212, 2022ACTIESNL, Terence, Tabby20, 2203ActiesNL, BG1efeb0, 8Couponsde, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, BGCAPITALOS8, BG8FORMULAMX, BGBFDAY8
(these coupons are old, so probably won’t work)
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
Here is price history (for all/most countries) for RIDEN DPS5020 Digital Control Power Supply. The lowest price was: $42.37.
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)).