Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Rated Voltage 3.0V, Power By 2x AA Battery (Not Included), Model Mijia Mosquito Dispeller, Weight 133g / PC, Material PP+ ABS, Working Time More than 90 days with effecttive Use, Size 96.5mmx 96.5mmx 52.7mm / 3.80″x 3.80″x 2.07″, Rated Power 0.06W, (bottom is made of high quality organic silicone), Color Warm White
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I can’t tell you if this price is good – not enough records in my database, so I won’t judge. You can get coupon down below.
Link: Banggood product page
1. ($16.91): BG589b2e
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): TTxBG10, BGss8%hl, BGMIMO199, BGPMOTI112, bgssaff9, BGMK1255, AFfbG10, BGSMI25, BGMIJIAM, 502C6B, BGBFAFF2019, BGCITYADS2019, BGBFI9889, BGBGHFRI15, BGRTG699, BGMIJIAAA1, BGAFF10OFF, BGJIAMI8, bGhOnEy10, BGFGH109, BGCNMMJuly7, BGdragonBoat, BGSS10%SW, BG99MOS, BGJULY250, BGCLY386, bgshOOp10, BGSJHome28, BGCZPro21, BGHome15%, BGFKFGPR, BGXXMLAS, BGTT10, BGCZXIAOMIMR, BGKKSLDJ86, BGCDC046, BGAFF7OFF, BGCZXMM9, BGXPEDEWFE54, BGMA1204, BGCuponation10, BGMODKI2CNCZ, BGREESP07, BGXIAOMIS02, BGAP0701, 13f142, BGAP2107, BG10OFFAFF, BGwhielabel, BG00c906, BGAlerabat1, BG9e95c5
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Xiaomi Mijia Electric Household Mosquito Dispeller ($-3)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: $9.99.
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)).