Aliexpress
Click here… to search for E-element Z88 Keyboard Blue Switch on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment.
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): beda40, e2bcea, TTxBG10, e18b44, BG3CSUM, AFfbG10, 502C6B, BGCITYADS2019, bGpAnDacHeCk, BG22iMars, BGMPB2020, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BGCuponation10, BGHONEY2110, 13f142
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Price history (for all/most countries) for E-element Z88 Keyboard Blue Switch is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).