Price history, coupons and price alert are available on this page. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
resolution 480x 272, unique vibration speaker, use it as an MP3 player, Enjoy super powerful shock effect, Support movie, Improve Chip and CPU Fireware, Support DTS, support NEOGEO Arcade games, Support music function, Built-in 10000 games, video playback function, Built-in 8G memory, Support download games by yourself, support playing more games, 5.1 stereo surround sound, GBA, 4.3 inch 16 million colors 16: 9 HD screen, PS1, NES, etc
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($32.99): BGX1232
2. ($33.99): BG836112
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 and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGVCCD13, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BGELIG0920, BgcLuBofErtA10
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Here is price history (for all/most countries) for X12 5.1 inch 8GB Game Console.
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)).