I can't help thinking that a single manual organ that isn't portable seems like a strange idea. I guess it keeps the cost down though. Here are a couple of nice ones.
A Hammond Sounder (no I've never heard of it either) currently on Ebay.
And this appears to be a very small and simple Yamaha Electone also on Ebay.
Update: the Hammond Sounder sold for £30. The Yamaha attracted no bids at all.