Just check coupons out (with price alert and history). 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):
Certification CE / RoHS, Model SHP6, Type EU Plug, WIFI Frequency 2.4GHz, Working Temperature -20~45℃, Maximum Power 3450W, Material V0 fireproof material, Max Load 15A, Dimension 1.73*1.73*2.75 in, Weight 59g, Relative Humidity ≤80%, Input 220V-240V 50/60Hz
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. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
1. ($42.76): Cuponation9
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGTA529, BGXY529, BGa8c0e0, BGSmart6, 8BGwbg2204, 2203ActiesNL, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BG4ef2d1, hoNEYbGdeAlS, BGJUNEGSG9, DealBGimpact, BG8FORMULAMX
(you can check these old coupons out, but these probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – 3 pcs. BlitzWolf BW-SHP6 Pro 15A 3450W Metering Smart Socket ($-3)
Price history and price alert
Not enough data to show price history chart… $32.66 is the only recorded price. It was not cheaper than that since we have saved it in DB.
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)).
