Interface quantity: 5 (1x HID), Languages: English/Chinese/ Japanese, Interface type: USB-A/Micro USB/Type-C, Resolution: 128*128, Size: 77*35*14mm, Current measuring range: 0-6A, LCD size: 1.44 inch, Interface impedance: 28m ohm, Voltage accuracy: 0.0001V, Offline record group number: 350*4 group, Working current: 0.4mA/5v, Independent power supply; HID 5V, Current accuracy: 0.00001A, Voltage measuring range: 4-26V, Operate type: Track-wheel, LCD type: TFT.
Just check coupons out (with price alert and history). What is best price?
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.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($72.76): BGd0b05d
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): elec, BGmodule12, BGE13, AFfbG10, BGVDay10%off, bGhOnEy10, BGdragonBoat, bgshOOp10, BgoFErTaSchInA10, BGELIG0920, BgcLuBofErtA10, BGRUMB15, BGAFF10OFF, BGCuponation10, BGHONEY2110, 13f142
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for POWER-Z KT001 USB PD Tester. The lowest price was: $44.99.
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)).