You can create price alert here, copy coupons and view price history. Best price?
Input interface: Type-C, Charging input: 5V~1A, Product size: 210*1 80*65.5mm, Product name: Smart Hanging Neck Fan, Product material: ABS / silicone, Battery capacity: 1600mAh, Charging time: ≤4 hours, Product color: blue / pink, Product model: ZSS210606, Product weight: about 295g
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
1. ($33.37): BGherra
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG2NeckFan
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Qualitell 1600mAh Swing U-Shape Neck Fan? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).