Aliexpress
Click here… to search for KUMI Portable Mini USB Neck Fan on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (14.39 USD): BGAFF10OFF
Coupon (14.99 USD): 13f142
(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): BGKM515, AFfbG10, BGKM634, affbg10, BGVDay10%off, bGhOnEy10, BGdragonBoat, BGSS10%SW, BGKMG515, BgoFErTaSchInA10, BgcLuBofErtA10
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for KUMI Portable Mini USB Neck Fan.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).