ATM you can buy Portable LED Mosquito Killing Lamp for $9.99 (in Banggood). Just check coupons out (with price alert and history). Best price?
Latest price update (UTC time):
Mosquito Repellent: Light temptation, Product: Mosquito Killing Lamp, Suitable For 50㎡-120㎡, Color: White/Black/Grey, Input Voltage: 5V
Banggood ($9.99)
Banggood warehouse is located in China. I couldn’t find any coupon for this product on latest product update. Is it good price? IMHO this is a good price, coz it’s lower than average ($11.22)
Link: Banggood product page
Price: $9.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGd9d7fe, BG23ALEAprD, BG081591, BGc4a05f, BGd3957e
(there’s a little possibility that old coupon will work)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for Portable LED Mosquito Killing Lamp.
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)).