Aliexpress
Click here… to search for Misol HP3001 Wireless Weather Station with 5 Sensors on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is one great coupon!
Link: Banggood product page
Coupon (155.24 USD): 00c906
(CouponsFromChina.com tip: coupon code has to be applied in shop’s 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): BGHP89, BGHP3, AFfbG10, BGBFAFF2019, BGCITYADS2019, 7bcdf9, BGVDay10%off, BGHOMEG12, BGAFF7OFF, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BGHome15%, BgcLuBofErtA10, BGCOMK305, BGCuponation10, BGHONEY2110, BANGGOODSD, BGab8193
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for Misol HP3001 Wireless Weather Station with 5 Sensors.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).