Aliexpress
Click here… to search for Motospeed K87S NKRO White Keyboard Red Switch on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (55.79 USD): BGHONEY2110
Coupon (60.99 USD): 13f142
(CouponsFromChina.com tip: coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): PCNETWORK, e2bcea, TTxBG10, e18b44, BGss506, BGPAYPALSS, AFfbG10, BGBFAFF2019, BGCITYADS2019, 7d18f7, 2880c7, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BGCuponation10
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for Motospeed K87S NKRO White Keyboard Red Switch.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).