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 (41.25 USD): MVC8SPRING
Coupon (41.25 USD): 8BGwbg2204
Coupon (41.70 USD): 2203ActiesNL
Coupon (42.15 USD): BG00c906
(CouponsFromChina.com tip: just apply this code 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): BG1911f9, 13f142, BGd0b05d, 00c906, ADMITAD2212, 2022ACTIESNL, Terence, Tabby20, BG1efeb0
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for Geekcreit Upgrade Boldfaced Word DIY Glow Clock Kit.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).