Used ones cost slightly less than they cost new, particularly considering inflation.

I started watching Techmoan and similar YouTubers. I have some nostalgia for compact cassettes and saw a video where they used a Dolby S deck and metal tapes and made very good recordings... Hardware like that came in around the time I was in grad school and went into a hole so it was "better than I remembered". There are Dolby S decks on the market for prices that seem within reach but the metal tapes are like $40 a piece now.

Optimal cassettes might sound as good or better than minidisc but rewinding is a hassle. They still make cassette decks and tapes but they are much worse than what was made 30 years ago. With NetMD you can record audio from your computer to a MD the same way you do with a computer which is easy: there's something to say for media that let you record your own music so you aren't stuck with what got released on SACD or can find on vinyl (which isn't too bad.)

It still seems silly when I've got several devices in my backpack usually that can play music including the Tracfone I use for emergencies.