Aliexpress
Click here… to search for KCASA FCSY-380 USB Fan on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (20.39 USD): 2022ACTIESNL
Coupon (20.61 USD): BG00c906
(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): BGfanmini, PICODICOM, BGMR99fan, 2019SPEDM, bgssaff9, aff7off, 13f142, bGpAnDacHeCk, BGHOMEAPP, bGhOnEy10, BGTT10, BGSS10%SW, bgshOOp10, BGHome15%, BGHOMEAPP13, BGHOMEA13, BG10OFFAFF, BGwhielabel, BG10OFFAFF1, 6GSGIT, 00c906, ADMITAD2212
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for KCASA FCSY-380 USB Fan? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).