Imagine trying to sell these during the Depression: that's the cost of a car. But there were people who could afford them; this ad ran in the National Geographic, which had ads for all manner of luxury goods. If you google the address you come up with a tony neighborhood.
The idea that the organ was capable of containing, "potentially, the entire cosmos of audible music" comes as news to anyone who played one of the damned things - it had two settings, really. Organ and Not-Really-Organ.