You can build it yourself for much less.. here are the parts you'd need..
Raspberry PI 4... ~$35
adafruitAdafruit Industries, Unique & fun DIY electronics and kits Raspberry Pi 4 Model B - 2 GB RAM ID: 4292 - The Raspberry Pi 4 Model B is the newest Raspberry Pi computer made, and the Pi Foundation knows you can always make a good thing better! And what could make the Pi 4 better than the 3? How about a faster processor, USB 3.0 ports, and updated Gigabit Ethernet chip with
https://www.adafruit.com/product/4292
Mega Pi Case.. ~$20
8BitDo Controller... $44 (You can find cheaper controllers)
RetroPi OS/Software.. $FREE
There are 1000's of places online you can download the games from.