You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Black, Cable Length: 1.6M, Dimension: 357*129*32mm, Material: Metal + ABS/PC, Supported Systems: Win10, Layout: 87 Keys, Connection: USB Wired (Detachable USB to Type-C Cable), For macOS, Color: White, Switch: Cherry Switch Red Switch
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. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
1. ($132.76): bGhOnEy10
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): a0aeff, PCNETWORK, e2bcea, TTxBG10, e18b44, BGss11, BG3CSUM, AFfbG10, affbg10, 502C6B, BGBFAFF2019, BGCITYADS2019, BGVDay10%off
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Xiaomi Yuemi Pro MK02 Cherry Keyboard Black ($-3)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Yuemi Pro MK02 Cherry Keyboard White.
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)).