Here's a direct link to the the book:

Here is a link that might be useful: Clivia book online

I bought the book and it was nowhere near $300, by maybe $270. Who is charging so much for it?

Hi,

There is some seller on Amazon selling 4 copies for well over $300. Crazy. Even $100 is excessive, but it is a good book for a Clivia collector. It is out of print. Now that you can probably print it directly from google, it won't cost nearly that much to have the info in a binder instead of a book.
Craig

If you are planning on reading or copying the book, I recommend doing it soon. I don't think copyright laws encourage the release of a complete book online and imagine it will be removed.