I have a Kindle copy of Oxley's very good book. I'm pretty sure it was less than $20. It looks like the vultures have arrived to sell $100+ book copies to any who missed the original publication run.
EDIT: I found the Kindle copy after all. It is $8.99, well worth it. I found it by searching within Kindle instead of using the Amazon store. It looks like the $8.99 link is still in operation, but don't know for sure.
But Amazon must be purposely playing along with the vultures since they have withdrawn the Kindle version, which has zero marginal cost to them. Amazon is not your friend.
Of course I can't sell or lend my Kindle copy, by design.
This book could be in public libraries, so contacting your local library might find it via interlibrary associations or loans. I personally don't think it is worth the trouble.