You can get Candy Mechanical Keyboard Switch for 11.99 USD using coupon code (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Best price?
Latest coupon code price check (UTC time):
Banggood (11.99 USD)
Banggood warehouse is located in China. I can’t find any active coupons for this product in Banggood. Is it a low price? Cool, average is 16.28 USD, so current price is lower!
Link: Banggood product page
Price: 11.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG84402d, BGc0ac93, Cuponation9, BGKBandmos12, BGff5312, BG3dd49f, BG5b66be, BGe5622d, BG589b2e
(there’s a little possibility that old coupon will work)
Aliexpress
Click here… to search for 45Pcs DAREU Candy Mechanical Keyboard Switch 5-Pin on Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for 45Pcs DAREU Candy Mechanical Keyboard Switch 5-Pin.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).