Just check coupons out (with price alert and history). What is best price?
Ampown GD20 TV Game Console 4K 60fps HDMI Low Latency Output GD10 Ultra GD20 TV Game Stick Portable Retro Console Built-in 70K Game – 256GB
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
1. ($28.99): BG3d0cbc
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGadb34c, BG589b2e, BGCAPITALOS8
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for Ampown GD20 TV Game Console 4K 60fps HDMI 256GB.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).