Aliexpress
There’re some similar items on Aliexpress in my database. There may be some other items though.
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (18.99 USD): BGTYOI324
Coupon (18.99 USD): BGPS324
Coupon (25.73 USD): 00c906
(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): BGMAYTD324, BGwhielabel, BGYFO24, BGISXIAOMI1, BGSPXIAOMI, BGPT324, BGJUTD324, BGdc324, BGXMFO324, BGPDhome53, BG10OFFAFF1, BGTYOC324, BGTYC324, BGISOC324, BGAUC324, BGAUOC324, BGTYOG324, BGSPHOME41, BANGGOODSD, BGUdb55, BGUbf50
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for 4x Xiaomi Smart Bluetooth Thermometer Hygrometer LYWSD03MMC? There we go.
Price records source(s): Banggood
Click on image to enlarge.
You can set price alert (for Banggood).