$75.99 – ChargerLAB POWER-Z KM003C Detector Tester for Mobile Repair USB PD3.1 Protocol 48V Range Dual Type-C Voltage Charger Current.
$75.99 – that is current price with coupon for ChargerLAB POWER-Z KM003C Detector Tester (in Banggood). Price history, coupons and price alert are available on this page. Best price?
Latest coupon code price check (UTC time):
Banggood ($75.99)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. Is it cheap? Well, according to CouponsFromChina database this price is the best in history (3 records).
Link: Banggood product page
Price: $75.99
Additional Banggood coupons: first page and second page
This is the best price ever noted in my database!
Old coupons (from the oldest to the newest): BGALL8
(there’s a little possibility that old coupon will work)
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for ChargerLAB POWER-Z KM003C Detector Tester is here. The lowest price was: $75.99.
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)).