Torque specs aren't that important- well, until you strip a hole and there is no room to oversize or helicoil-or your handlebars fall off at 28mph.
But most people that have worked on stuff for all their lives, get it pretty close naturally. I still like my snap- on, and now at 10 years old, its less than a dollar a week, and would sell for 80%+of new, a text book get what you pay for.
Are you saying that tool was $500?