According to my DB the lowest price is $38.78 for LiitoKala Lii-S8 Battery Charger (in Banggood). Price history, coupons and price alert are available on this page. Do you want to know what the best price is?
Latest price update (UTC time):
1x Plug Adapter according to your country socket size, 1x EU/US Plug, 1x Battery Charger
Banggood ($38.78)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. Is it a low price? Hmmm, price is higher than average (which is $37.56 right now), so better set price alert down below…
Link: Banggood product page
Price: $38.78
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BgcLuBofErtA10, m9977, FIN7762, BGFLS15, BGAFF10OFF, BGCuponation10, 4BLF, BGHONEY2110, BG10OFFAFF, BGwhielabel, BG10OFFAFF1, BANGGOODSD, BGTorch4, 00c906, BGtorch2, BGtorch3, FIN69483, BGd57765
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for LiitoKala Lii-S8 Battery Charger is here.
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)).