Aliexpress
Click here… to search for BCASE 3-Speeds Portable Handheld Fan on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database.
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, BGTRIP01, bgshOOp10, BgoFErTaSchInA10, BGHALLOWEEN, BGHOMEAPP13, BGHOMEA13, 13f142, BG10OFFAFF, BGwhielabel, BG10OFFAFF1, 6GSGIT, 00c906, BG00c906, ADMITAD2212, 2022ACTIESNL, Terence, Tabby20, 2203ActiesNL, BG1efeb0, 8Couponsde, MVC8SPRING
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Here is price history (for all/most countries) for BCASE 3-Speeds Portable Handheld Fan.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).