The same as a Dewalt battery drill compared with a cheap Walmart thing.

Just go to a local tool/machine shop and they highly will have something affordable. I was also given a torque screwdriver but to be hones I never use it. It was very useful with our engines where the head was bolted on the sleeve with the screws in the slleve. There we felt a huge deforming of the sleeve when the bolts were not tightened the same as they were, With the normal concept engines where a brass sleeve is used and the head boltrf onto the crankcase you indeed can feel a difference when rebuilded but that is no issue, when starting up it is gone because the re-seating of the parts on higher temps..