Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (76.35 USD): BG1efeb0
Coupon (77.18 USD): Terence
Coupon (77.18 USD): 2203ActiesNL
Coupon (78.01 USD): BG00c906
(CouponsFromChina.com tip: you should apply the coupon 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): BG28e982, 00c906, ADMITAD2212, 2022ACTIESNL, Tabby20
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for Original Capacitive Stylus for Lenovo Xiaoxin Pad Pro/ Pad Tablet.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).