Type C USB Power Meter

I bought something similar on aliexpress for about $6. There are similar devices on Amazon.https://www.amazon.com/YUNAWU-Voltmeter-Ammeter-Capacity-Monitors/dp/B07J9VR36R/ref=sr_1_8?ie=UTF8&qid=1539637356&sr=8-8&keywords=usb+oled+testerI'm not really sure this is your best bang for the buck.