Key Number: 87, Response Speed: 1ms, TTC Red switch.
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Updated:
Banggood
Warehouse in Hong Kong.
Link: Xiaomi Yuemi MK01B Keyboard White Red Switch
$86.23 with coupon: BGc0ac93
Additional Banggood coupons:
1. First page
2. Second page
Price history and price alert
Here is price history (for all/most countries) for Xiaomi Yuemi MK01B Keyboard White Red Switch. The lowest price was: $32.99.
Price records source(s): Gearbest, 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)).