Walmart sill sells multiple brands of cassette recorders in this specific format. They sounded terrible when they were peak technology, so I have to assume they are even worse now.

https://www.walmart.com/ip/Cassette-Player-Tape-Recorder-Por...

https://www.walmart.com/ip/JENSEN-MCR-100-Cassette-Player-Re...

https://www.walmart.com/ip/Craig-Portable-Cassette-Player-Re...

They're still being mass produced today

Not while Goodwill and eBay exist.