Material: Plastic, Model Number: K1040, Type: Gel Pen, Brand: Xiaomi.
Basically copy coupon, view price history or create e-mail price alert. What is best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I have no active coupons for you right now.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): TTxBG10, BGMLGelPens, BGML8Pcs, bgssaff9, BGML47D, AFfbG10, BGBFCR01, BGCITYADS2019, BGVDay10%off, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSS10%SW, BGGP910, BgoFErTaSchInA10, BGWWN05, BgcLuBofErtA10, BGHONEY2110, BANGGOODSD, 6GSGIT, 00c906, BG00c906, ADMITAD2212, 2022ACTIESNL, Terence, Tabby20, 2203ActiesNL, BG1efeb0, 8Couponsde, MVC8SPRING
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Xiaomi KACO Colorful Gel Pens 0.5mm 8Pcs [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi KACO Colorful Gel Pens 0.5mm 8Pcs. The lowest price was: $3.49.
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)).