Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I have no active coupons for you right now.
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): BGXINMI047, BGAFF10OFF, BgcLuBofErtA10, BGSJ0111, BGCuponation10, 7bcdf9, BGHONEY2110, BANGGOODSD
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for PETONEER Smart Pet Automatic Feeder with Camera.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).