Aliexpress
Click here… to search for NEXTOOL Telescopic Window Breaker Self Defense on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. So I have checked for active coupons (all category coupons and old ones), but there was 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): BGNU2, Tools3, BG2SPS, BG2020NS, BG11BB, BG2MFC, bGhOnEy10, BGherra, BGWow101, BGPower09, BgcLuBofErtA10, BG3541d6, BGd3bdd4, BGNTOOL7, BG111385
(probably won’t work, but you can try them out)
Price history and price alert
Here is price history (for all/most countries) for NEXTOOL Telescopic Window Breaker Self Defense.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).