Ultrasonic Solar Cat Dog Pest Repeller (Brand KCASA, Detection Range 8 – 9 meters depending on animals size, Infrared Sensor Angle 110 degrees, Power Supply Solar power + 3x AA size rechargeable batteries or 5V / 500mA adaptor, Red Light Indicates the units is activated, Model KC-JK550).
Just check coupons out (with price alert and history). Do you want to know what the best price is?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($33.29): BG081591
2. ($34.77): BG589b2e
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 and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGfa5d3a, BG3397e7, BG5cd82e, BGed41a8, BG3aeccb, Cuponation9, BG8ReviTrage, BGcoupon8off, BGGutscheine, BG00c906, BG8OFFCOUPON, TTBLACK5, BGdbe184, BGf625a4, BG23ALEAprD
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Ultrasonic Solar Cat Dog Pest Repeller. The lowest price was: $19.99.
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)).