Go down and check coupons out. Remember to check price history if it is available. Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Display accuracy 0.5%+2 words, Constant pressure state Voltage stability ≤0.1%+3mV ;Low voltage: 0.2%～0.3%+3mV, Operating temperature 0°C～40°C; （Relative humidity： <80%RH）, Ripple noise: ≤30mVrms, Ripple noise: ≤20mAems (effective value), Output current 0～10A, display resolution Voltage: 00.01V Current: 0.001V, Product Size 252*170*84mm, Input voltage 230V+10%; 50Hz (115V+10% 60Hz), Load stability≤0.5%+3mV, Product weight 1.2kg, storage temperature －10°C～70°C; （relative humidity： <70%RH）, Load stability≤0.2%+3mA, Out voltage 0～30V, Constant current state Current stability≤0.2%+3mA, Fuse specifications 3A (220V input) / 5A (110V input), Model NICE-POWER SPS-W3010
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
1. ($71.99): BGAMMT03
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGPower505, BGHONEY2110, BGnicepower2, BGDIEN22, BGPower420, BGLAB61, BG93d1a3, BGLab21, BANGGOODSD, 6GSGIT, BGMOTO478, BG00c906, ADMITAD2212, 2022ACTIESNL, BGSCM11, BGNEWYEAR8
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Check out price history chart (for all/most countries) for NICE-POWER SPS-W3010 30V 10A DC Power Supply.
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)).