Small anecdote: many years ago I tracked down a working Dreamcast and acquired Sonic Adventure 2, arguably one of the best SEGA games ever created. At the time, I remember spending $40 for a used copy of the game that was now a decade old. After just scanning eBay, it looks like SA2 for Dreamcast is still selling for between $20-$70/ each. Incredible.

Other side note: one flaw of the original Dreamcast was that the circuit board that houses the controller ports had a capacitor that would occasionally fail. To the uninitiated, the console would become a brick since you can't play without a controller. I used to buy large sets of "broken" Dreamcasts, and could usually fix more than half of them by simply swapping internal components. I miss the days of this level of modding. Though the OG Xbox was pretty fun too in this hacking space.