Headphone jack: about 3.5mm/0.14inch, CPU: RK3326 quad-core 1.5GHZ, Charging support: type-C, Battery life: 6 hours, System: open source for LNUX, Charging time: 2.5 hours, Screen: 3.5-inch IPS, Games: 64GB: 3000+; 128GB: 5000+ 256GB: 8000+, Maximum power consumption: 2W/H, TF card: 64GB/128GB, WFH+Bluetooth combo module: RTL8723BU, DDR3: 1GB, Input power: 5V/2A, Built-in speaker: 1W, Size: about 108x 93x 20MM/4.25x 3.66x 0.79inch, Built-in lithium battery: 3000mAh, Game: fit for N64/ for PS1/for CP3CP2/for CP1/for NEOGEO/for GBA/for NES/for SFC/for MD/for GBC/for GB and other emulators.
You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
1. ($98.17): BGAlerabat5
apply it 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/i1u
Old coupons (from the oldest to the newest): BGJPN3RB, BGJOE7E, BG5d6806, BGVDGC12
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for POWKIDDY RGB20 RK3326 128GB 3.5 inch Game Console? There we go. The lowest price was: $92.4.
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)).