Aliexpress
There’re some similar items on Aliexpress in my database. There may be some other items though.
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
3x XIAOMI Mijia Bluetooth Thermometer 2 | 15.87 USD | – |
More on Aliexpress… Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
Coupon (12.86 USD): BG10OFFAFF1
(CouponsFromChina.com tip: apply it 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): 99a5c28, 99a5c0, 99a5co, 502C6B, TTxBG10, SPT20, AFfbG10, BG20travel, BGVDay10%off, BGA184, BGTS204, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGTRIP01, BgoFErTaSchInA10, BgcLuBofErtA10, BGTY742TRL, BG10OFFAFF, BGwhielabel
(probably won’t work, but you can try them out)
Price history and price alert
Price history (for all/most countries) for Xiaomi U 3x 50ml Silicone Bottles is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).