Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
Coupon (66.87 USD): BGcf924d
(CouponsFromChina.com tip: apply it in your 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): BGc0ac93, BG2896df, keyboardMVC, BG3056dc, Cuponation9, BGKBandmos12, BGff5312, BG6e38f4, BG3dd49f
(there’s a little possibility that old coupon will work)
Price history and price alert
Do you need price history chart (for all/most countries) for TEAMWOLF CIY GAS67 Transparent Mechanical Keyboard Kit 67 Keys? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).