Check coupons or create price alert down below. Let’s see what best price is ATM.
Lens width: 60mm, Glasses width: 145mm, Nose pad: Comfortable silicon
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 and price update (UTC):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
1. ($47.73): BGAFF10OFF
apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): 34398b, aff7off, AFfbG10, BGMPB2020, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – Xiaomi Anti-UV Polarized Sunglasses Grey ($-3)
2. China – Stone blue Xiaomi Anti-UV Polarized Sunglasses ($-3)
Price history and price alert
Price history (for all/most countries) for Xiaomi Anti-UV Polarized Sunglasses Golden is here.
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)).