Did anyone here purchase this system? If so, were you able to test it? It looks like the system is running a custom BIOS which is interesting because I don't think I've seen an official SEGA development retail console do that. https://www.ebay.com/itm/Ultra-Rare...Check-System-Development-System-/153430266716
The Dreamcast checker console also has a custom BIOS as well, I'm assuming. @Laurent told me just the other day that he has a contact that will likely be dumping the BIOS from both Dreameye and Checker consoles. Here's hoping