Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Hantek 2D72 Oscilloscope Waveform Generator Multimeter [EU] (-3 USD)
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. I found coupon for you. Check this out.
Link: Banggood product page
Coupon (154.87 USD): BGGines
(CouponsFromChina.com tip: this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG213XWJ, BGAFF10OFF, bGhOnEy10, BGBG7937, BGherra, 7d18f7, BGSS10%SW, bgshOOp10, BG11SHOP, BGCuponation10, 13f142, Tabby20
(there’s a little possibility that old coupon will work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Hantek 2D72 Oscilloscope Waveform Generator Multimeter [EU] (-3 USD)
Price history and price alert
Price history (for all/most countries) for Hantek 2C42 Oscilloscope Multimeter is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).