According to my DB the lowest price is $6.99 for KWS-2302C Type-c DC Voltage Ampere Power Meter 0-30V 0-12A (in Banggood). Check coupons or create price alert down below. Let’s see what best price is ATM.
KWS-2302C Type-c Multifunctional Digital Display DC Voltage Ampere Power Meter 0-30V 0-12A Real-Time Monitoring Intelligent ID Quick Charge Test High Current Terminal Compact Size
Latest coupon code price check (UTC time):
Banggood ($6.99)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. Price? I have never seen better price than the current one in CouponsFromChina database, so it’s the best!
Link: Banggood product page
Price: $6.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
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 KWS-2302C Type-c DC Voltage Ampere Power Meter 0-30V 0-12A.
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)).