Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – DANIU LCR-TC1 Transistor Tester [EU/UK] (-3 USD)
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood.
Link: Banggood product page
Price: -3 USD
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
Old coupons (from the oldest to the newest): BGTR15, AFfbG10, d459b8, 0e7f33, BGCLZY, FBCOUPON1, 8cbeb0, BGDANIU, BGherra, BG4677, BG6983df, 13f142, BGac13a1, BG8dfb1e, BGARS795, BGGines, BGTOOS729, BG8FORMULAMX
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – DANIU LCR-TC1 Transistor Tester [EU/UK] (-3 USD)
Price history and price alert
Here is price history (for all/most countries) for DANIU LCR-TC1 Transistor Tester.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).