A few years ago I bought a 3DS XL (red) for $40 from a guy who seemed strapped for cash and I got an insanely good deal.
I had the console CFW'd by someone from this community whom I don't remember anymore and these days I use it just to play Mario Kart 7. Does it feel repetitive? Yeah, sure. Boring? No, still fun!
Also have an OLED Vita, but much as I like the Vita, it can't beat 3DS' catalog.