Aliexpress
Click here… to search for DAREU EK868 Mechanical Keyboard Bluetooth 5.1 68 Keys on Aliexpress
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
Coupon (30.99 USD): BGaf8c20
Coupon (54.55 USD): BGcf924d
(CouponsFromChina.com tip: 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
Old coupons (from the oldest to the newest): BG5af6d2, Cityads2213, BGc0ac93, keyboardMVC, BGa8e2f1, Cuponation9, BGKBandmos12, BGff5312, BG3dd49f, BG7fe58c, BG1a3510
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Price history (for all/most countries) for DAREU EK868 Mechanical Keyboard Bluetooth 5.1 68 Keys is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).