Dimension 2.0x 3.7 inch (approx), Color Black, Output Frequency 25kHz -65kHz, Effective Coverage 80-120 square meter / 861-1292sq.ft., Material ABS, Plug Type EU, Working Volt AC 90-250V 50/60Hz, Watt 4-6W.
Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
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.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood).
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG800161, BG085a36, BGJUNEGSG9, TTSUMMER8, BG186edf, BGd0f694, BGd894ca, Cuponation9, BG3ff5c5, BGd67c34, BGc6594c, 9OFFSUMMER, BG86e28d, BGae3457, BG215ccb, BG5cb17a, BGadea76, BG342c7d, BG58bb2d, BG8ReviTrage, BGcoupon8off, BGGutscheine, BG00c906, BG8OFFCOUPON, TTBLACK5, BGdbe184, BG589b2e, BGf625a4, BGa425d1, BGddbea6, BG9f8e4e, BGa6cc83, BG23ALEAprD, BG43c2fa, BGbd0e25, BG081591, BGc4a05f
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – 4Pcs Ultrasonic Insect Electronic Mosquito Mice Fly Repellent [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for 4Pcs Ultrasonic Insect Electronic Mosquito Mice Fly Repellent. The lowest price was: $7.99.
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)).