Aliexpress
There’re some similar items on Aliexpress in my database. There may be some other items though.
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 3.55 USD | – |
 |
Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 5.19 USD | – |
 |
Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 5.25 USD | – |
 |
Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 9.48 USD | – |
 |
3x XIAOMI Mijia Bluetooth Thermometer 2 | 15.87 USD | – |
 |
4x Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 18.45 USD | – |
 |
4 pcs. Xiaomi Mijia Bluetooth Hygrometer Thermometer 2 | 18.72 USD | – |
 |
Xiaomi Mijia Bluetooth Smart Hygrometer Thermometer | 19.53 USD | – |
 |
4x Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 20.39 USD | – |
 |
4 pcs. Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 21.19 USD | – |
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. There’s only 1 record in my database, so I have no idea if the price is OK.
Link: Banggood product page
Coupon (20.69 USD): BG10OFFAFF1
Coupon (21.99 USD): 13f142
(CouponsFromChina.com tip: this code has to be applied 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): 502C6B, 0c6c20, vipupgrade8, TTxBG10, BGMICLOCK, BGPMIBT45, AFfbG10, BG25GAGA, BGBT046, BGMIJIAT1, BGXM134, BGBT4PL, BGBT408, BGMIJIAT, BGMIT12, BGBT40PL, BGLAO12, BGEOFH22, BGWEO12, BGMIE88, BGBINKUPON760, BG12CLK, BGBFCR01, BGBT4RA, BGMIJ119, BGMTCK, BGMJ1188, BGXT1177, BGBAPOHG, BGVDay10%off, BGTFKD, BGHOMEG12, BGMIJIAT13, FBCOUPON1, BGma685, BGTT10, BGxm485, bGhOnEy10, BGBT40RA, BGCNMIJIA1, BGKS453M, BGCNXiaomiJuly1, BGdragonBoat, BGVVDCB, BGSS10%SW, BGLKZZVVDC12, BG760VV, BGXMST760, BGXMYB760, bgshOOp10, BGDQHOME28, BGHome15%, BGGFHOME27, BGCZPROHOME, BgoFErTaSchInA10, BGCZOC760, BGHOMEA15%, BGCODEYR760, BGELEHOME44, BGMS760, BGCODEYB760, BgcLuBofErtA10, BGBFHOME33, BGLD2A56, BGDESE760, BGAFF10OFF, BGFEFR760, BGFEFO760, BGMARFR760, BGMASE760, BGCuponation10, BGMRDC50, BGXIAOMI760, BGMAFO760, BGAPXIAOMI4, BGAPFO760, BGMAYFR760, BGwhielabel, BGMIGLA20, BGPDhome49, BGHUOT760, BGTYOI760
(there’s a little possibility that old coupon will work)
Price history and price alert
There is only one database record (it was for 14.88 USD), so you can’t see price history chart.
You can set price alert (for Banggood).