LAC: torque wrench

[James Hanson]

I find that I'm in the market for a torque wrench.  Eyeing the wrenches
available on harbor freight, there seems to be a rather large variation in
price.  Does anyone have a suggestion on which one I should get? (for use
with my Audi, of course)  Is there a big difference between any of them
that I should be aware of?  Bear in mind that I'm a poor college student,
so price matters (how long do I have to subsist on ramen because of my
purchase?).

Thanks,
Jim