I wasn’t crying outrage, but I hope I am entitled to say what I think.
...Those 225 pounds to me look directed to those who can afford to buy his cars, rather than someone keen to study his ideas - if he has any, that is – or recollections.
On the latter point, that's entirely possible (apart from the gratuitous insinuation that Gordon Murray has no ideas). He, the writer and the publisher have every right to decide who their market is. We may think they made a poor decision, but they make the decision and they live with the consequences.
As for your being entitled to say what you want, obviously you are. Did anyone suggest otherwise? Or do you take any disagreement as an affront to that right?