Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database.
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): BGFUR49, bGhOnEy10, BGdragonBoat, BGSS10%SW, BGHome15%, BGAFF10OFF, BGCuponation10, BGMA2201, 13f142, BGAP0708, BG10OFFAFF, BGwhielabel, BGBR121, BG10OFFAFF1
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Solove P2 Electric Mosquito Swatter.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).