in my experience, nobody buys their own book
i just bought a hilux (08/92 RN85 Singlecab 22R Australian :P). one of the first things i do is buy not one but TWO manuals, so i can work on the friggin thing and not hassle people with annoying basic questions
it that bad at one stage on oldrollas, where if anyone asked a basic gregories/haynes like question, they'd get banned straight away