Xiaomi YMI MK03C Blue Switch Keyboard (Banggood, Aliexpress: Keys Amount 104 Keys, Model MK03C, Weight 800g, Switch Simulation Blue Switch, Color White, Connection USB Wired, System Support Windows 10, Size 440 *131 * 33 mm, Material Plastic + Metal (the best price with coupon)).
Price history, coupons and price alert are available on this page. Best price?
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 code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($46.79): bGhOnEy10
2. ($46.79): BgoFErTaSchInA10
3. ($46.79): BGAFF10OFF
4. ($46.79): BgcLuBofErtA10
put item in your cart and apply coupon code there 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): AFfbG10, BGBFAFF2019, BGCITYADS2019, BGMPB2020, BGdragonBoat, BGSS10%SW
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi YMI MK03C Blue Switch Keyboard? There we go. The lowest price was: $37.99.
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)).