Is it still possible to get a cassette player?

I just scored a bunch of Harry Potter audio books on cassette. I thought my husband’s stereo had a tape deck, but apparently it died a while back. I’d like to get a boom box or a Walkman for my son, so he can enjoy these tapes and the other books-on-tape in my collection.

Where’s the best place to find one?

Also, if any of our hoarders curators of extensive nostalgia collections have one lying around that they’d like to part with, PM me.