Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Suitable for: Indoor and outdoor, Dimensions: Height- 265mm / Width- 120mm (approx.), Voltage: 220V / 110V, State: Solid, Power Source: charger(need to be connected to the charger), Product: Airflow Mosquito Killer, Color: Black, Design: Regular, Applicable Area: 20-50 square meters, Fragrance: None, Effective Area: Approximately 20 Sq, Time Used: 10 Hours, Specification: Monolithic, Feature: Eco-Friendly /Stocked, Plug type: EU / US
Banggood
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood.
Link: Banggood product page
Price: $-3
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 and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG80775e, BGHB218, BG1e7093, BG04b9fd, BGHECARE1, BG4ee866, BG12122e, BG149831, Cuponation9
(probably won’t work, but you can try them out)
Price history and price alert
Do you need price history chart (for all/most countries) for 220V Electric LED Mosquito Insect Killer Lamp? There we go.
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)).