I bought directly from krikzz, the guy who makes them, for $99 plus $8 for shipping.
https://krikzz.com/store/
It comes empty (for obvious legal reasons). You load up a micro SD card with the OS and any ROMs you want (it's pretty easy to find full library sets). SD card goes into the cartridge, boot it up and play!
Edit: FYI, they just released the X5 for the same price. It has dedicated saves (meaning you don't have to hit reset to save).
Last edited by whatthejish; 02-04-2021 at 05:16 PM.