To Ballantine's credit, they also had several other collections out at least one of which simultaneously, and between them all nearly all the stories were in print.
There's also a few softcver collections out now that get them all out there.
Amazing stories. I read about a third of this book and then set it aside so I can extend the pleasure. I love the tone of his writing, the humor and the love, the color and the cleverness.(I've previously read almost all the stories at least once).