Just check coupons out (with price alert and history). Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Measurable Frequency Ranges: 0Hz-50kHz, Amplitude Adjustment Ranges: 10 mV/DIV to 1 V/DIV, , Wireless Communication: Wi-Fi 2.4G, Amplitude Error: ±2.5%, Operating Voltage: 5V Micro USB interface power supply, Time Domain Ranges: 100 uS/DIV-10800 S/DIV, Signal Input Interface Type: BNC Interface, Maximum Measurement Voltage: ±8 V / ±80 V at probe X10, Current Consumption: <170 mA, Input Impedance: 1 MΩ (<0.5V/DIV); 330kΩ (≥0.5V/DIV), Maximum Record and Save Data Time: 93 hours, Maximum Sampling Rate: 150kHz, Data Recording and Saving Depth: 8388608*5, Model: ET602 / ET601
Banggood
Banggood warehouse is located in China. There are no active coupons for this product, but the price is pretty low isn’t it?
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG20236Tool, BGTOOS729, BG8FORMULAMX
(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 TOOLTOP ET602 Wi-Fi USB 5 Channels Virtual Oscilloscope.
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)).