I have it,
It is readable, interesting and worthwhile to get but not one of my favourites in my collection (saburo sakai's banzzai is my fav).
I always get good used copies off amazon marketplace for a couple of quid here and there ,whenever i'm getting a little burnt out for inspiration. .
first light by Geoffory Wellum and tempest pilot by ( i think john sheridan) off the top of my head are better reads.
Still if it's cheap get it he was a British legend.