When I was updating this page, then coupon price was $18.99 for Xiaomi Mijia Anti-slip Polarized Myopia Glasses Clip MJTA05LM (in Banggood). Go down and check coupons out. Remember to check price history if it is available. What is best price?
Xiaomi Mijia Anti-slip Polarized Myopia Glasses Clip Fashionable Night Vision Glasses Outdoor Sunshade UV400 Protection Sunglasses Clip
Latest coupon and price update (UTC):
Banggood ($18.99)
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood). Isn’t it too expensive? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal $18.49)
Link: Banggood product page
Price: $18.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
1. (19.7.2024, $16.99): BGHUSQG
Item: Xiaomi Mijia Anti-slip Polarized Myopia Glasses Clip MJTA05LM
Countries: CzechRepublic, Hungary, Slovakia(SlovakRepublic)
2. (18.7.2024, $16.99): BGGRCLIP
Item: Xiaomi Mijia Anti-slip Polarized Myopia Glasses Clip MJTA05LM
Countries: Greece
Old coupons (from the oldest to the newest): BGJULY018, BG15bff7
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for Xiaomi Mijia Anti-slip Polarized Myopia Glasses Clip MJTA05LM.
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)).