Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (39.90 USD): BGHONEY2110
Coupon (39.90 USD): BG10OFFAFF
Coupon (40.34 USD): 4BLF
(CouponsFromChina.com tip: 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
Old coupons (from the oldest to the newest): 6cd28f, BCNLXK, MB4C2, M4BG, BGBFCR41, BgcLuBofErtA10, BGFLS15, BGAFF10OFF, BGCuponation10
(these coupons are old, so probably won’t work)
Price history and price alert
Price history (for all/most countries) for Miboxer C4-12 Smart Battery Charger is here.
Price records source(s): Gearbest, Banggood
Click on image to enlarge.
You can set price alert (for Banggood).