That is where I got my slide projectors. Got to hunt for them though.
Yes, there are more carousels than there are projectors.
The Kodak Carousels have a fatal flaw—two plastic pieces in the automatic forward/reverse assemblies that actually become brittle over time and disintegrate.
There is a kit to fix it, but you have to take apart the entire unit to replace them.
So, the Carousel 750 I bought for a whole $6 in its original box was about 40 years old and worked perfectly.
For about 300 slides—then the automatic advance stopped working, and I knew it had succumbed.
So I just advance the carousel manually by hans. Takes a little co-ordination.
The projector was practically brand new, so I’ll keep it and look for another one.