Aliexpress
Click here… to search for Double Layer Electric UV Sterilizer Cabinet [EU] on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I couldn’t find any coupon for this product on latest product update. I don’t know if this is a good price – number of records in my database is too low!
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): bGhOnEy10, BgoFErTaSchInA10, BGAFF10OFF, BGCuponation10, BGHONEY2110, BGXH713, 13f142
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: 39.99 USD.
You can set price alert (for Banggood).