Lucyshouse:

The book is also on Ebay for a much lower but still a high price of £349.99, being sold by an automobilia book specialist

Item number: 350629342306

If you put the details in bookfinder.com then prices across the internet range between £472.57 and £1348.17

So the book certainly has a value but you need to bear in mind these are prices people are asking not prices that have been achieved.

The only real way to determine its value is to list and to see if anyone buys it.