Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Hong Kong. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
Coupon (48.99 USD): BG15143b
(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): BG049613, BG8a7b3d, BGf02425, MVC8SPRING, 8BGwbg2204, BGc43980, tRaDetRaCKeR, BGHU2089, BGff7ad6
(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 Realme 4K TV Stick 2/8GB is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).