Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe .
Link: Banggood product page
Coupon (50.99 USD): BGLMQ15
Coupon (52.79 USD): BGSCM11
(CouponsFromChina.com tip: put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): BGCarEle4, BGCarEle5, BG845979, BGCAR639
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for 12V 400W 9 Sound 150dB Car Police Horn Speaker [EU].
Price records source(s): Banggood
Click on image to enlarge.
You can set price alert (for Banggood).