$17.99 – LED Mosquito Killer Lamp 800mAh (Banggood, Aliexpress: LED Mosquito Killer Lamp Dual-Power 800mAh Rechargeable Battery USB Charging Indoor Outdoor Bug Zapper Portable Light Source Efficient Insect Eliminator – Black Rechargeable Version (the best price with coupon)).
According to my DB the lowest price is $17.99 for LED Mosquito Killer Lamp 800mAh (in Banggood). You can create price alert here, copy coupons and view price history. Best price?
Latest coupon and price update (UTC):
Banggood ($17.99)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. Isn’t it too expensive? From what I can see this price is higher than average price ($15.99).
Link: Banggood product page
Price: $17.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for LED Mosquito Killer Lamp 800mAh? There we go. The lowest price was: $13.99.
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)).