Aliexpress
Click here… to search for Interactive Cat LED Rolling Ball on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (22.74 USD): Cuponation9
Coupon (22.99 USD): BG8ReviTrage
Coupon (23.49 USD): BG00c906
(CouponsFromChina.com tip: apply it 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): BGpet1208b, 00c906, BGpetHX01, BGpetXY06, BGpetXY05, BGpetHX03, BGpet2022a, ADMITAD2212, 2022ACTIESNL, BGAlerabat1, Terence, Tabby20, 2203ActiesNL, BG1efeb0, 8Couponsde, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BGJUNEGSG9
(there’s a little possibility that old coupon will work)
Price history and price alert
Price history (for all/most countries) for Interactive Cat LED Rolling Ball is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).