It really depends. My father found my old consoles in the loft and I decided to get them working.
- PlayStation 1,2 and Dreamcast are easy to get, easily to repair. Normally the biggest problem will be CD/DVD-ROM drive that is bad. These consoles are extremely reliable other than the DVD/CD drive. Repairing such as this are simple and can be done in literally minutes, with a screw driver.
- Games are relatively inexpensive for PS1, PS2 and Dreamcast. Yes Marvel vs Capcom 2 and Castlevania Symphony of the night will £500 for a copy, but the vast majority of games can be found in Good Condition for £5-20. Absolute mint condition games will be about £30-50. I buy a couple of games a month for each console and have a nice small collection of classic games (not anything too crazy, but decent).
- I was missing cables for the consoles (long since lost). I got official controllers, and cables for reasonable amount of money. Memory cards were cheap. I did have to take apart the old controllers and service them, but again nothing major.
- If you have a slightly older (late-2000s/early-2010s) LCD TV, the upscaler will actually work properly and the games look pretty reasonable. You can get HDMI upscalers for a reasonable price for these consoles. Cheap upscalers can be bought online for PS1/PS2 and Dreamcast and the results are "OK".
Emulation is obviously easier, with a few caveats. You must find a BIOS for the PS1 and PS2. These can be easily found with some googling. Also DuckStation has licensing doesn't allow it to be repackaged for your <linux distro>, so you have to use their app image or download & compile yourself. Which is a bit annoying, as I don't really know what to do with AppImages.
I'd say "retro console" in the linux handheld sense is the best value hobby gadget to buy for the HN crowd.
After installing a custom firmware on the PS3, I am now able to play my PS2 games, and also have the benefit of using HDMI without an expensive upscaler.
Turns out, the PS3 satisfied my needs to relive childhood memories, although I never had one as a kid growing up.
Also, I started reading books again. A pretty hassle-free childhood memory, to say the least.
If you are going to buy a Wii U for wii games, make sure you buy one that actually has a gamepad, since they are useless without one (efforts are currently underway to make a working replacement, but currently you need a whole computer to pretend to be one)
I wouldn't recommend it for non-technical people, but people here would probably be fine.
Unless you absolutely need to play these games away from home and a phone isn't good enough, please just emulate on a computer instead of paying a subscription for some mediocre emulators that you can't even own permanently.
Also, the article really should mention why cheap generic HDMI converters are bad instead of just saying they're not recommended (the lower video quality is obvious, but what's less obvious is that they usually have significant latency that may make certain types of games much less pleasant to play)