A torque wrench is like a helmet.
Buy a $2.00 helmet for a $2.00 head.
Buy a $30.00 torque wrench for a $30.00 bike.
Torque value's are the most important aspect of working on any motor vehicle. Especially motorcycles. Spend the extra money to get a quality wrench that is calibrated.
You can get a decent one for $60.00 that will be O.K., if your on a budget.
Torque value's have a range,so most lesser value ones will hit it somewhere in the middle.
If a torque value is to be spot on,Your most likely not going to hit it.
But I advise spending the extra cash for a SNAP-ON one, If you can swing it.
It will be your wisest investment that will last a lifetime. And you can trust the results.
Maintenance is also important to the wrench.
Take care of it, in some cases your life depends on it, I.E. brake caliper mounting bolts.
Have it checked regularly to make sure it's accurate. Especially if you drop it.
A good torque wrench brings a good piece of mind, and a safe machine.