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.
You can create price alert here, copy coupons and view price history. What is the 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 coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. There is one great coupon!
Link: Banggood product page
1. ($72.76): BGd0b05d
put item in your cart and apply coupon code there 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
(there’s a little possibility that old coupon will work)
Price history and price alert
Price history (for all/most countries) for POWER-Z KT001 USB PD Tester is here. 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)).