Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Elspet Automatic 4L Large Capacity Cat Litter Box with 3 Colors Ambience Light App Remote Control UV Sterilization EU Plug
Banggood
Banggood warehouse is located in Europe 
. Sorry, but there’s no price history in my database. There is one great coupon!
Link: Banggood product page
1. ($338.55): BGALL8
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/5cd
Old coupons (from the oldest to the newest): BGHONEYSP, BGESJY8
(these coupons are old, so probably won’t work)
Price history and price alert
Not enough data to show price history chart… $335.99 is the only recorded price. It was not cheaper than that since we have saved it in DB.
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)).