Good morning all.
One thing worth noting with torque wrenches is that they're rarely accurate at the very bottom end of their scale. Even my extremely expensive Snap-on ones are only guaranteed to be accurate to within their stated margin within the upper 80% of their scale. Hence I have 4 of them, accurately covering everything from 4nm to 350mn. (& costing around £1000) OUCH!
As you're more likely to overtighten smaller fasteners, with the inevitable stripping of threads. I have always advised people to go for a lower reading one. So one with a range of 8 to 60nm is ideal for the majority of fasteners that the DIY'er is likely to fiddle with.
Halfords, or Laser seem to be pretty good value. Or if you're prepared to spend a little more go for Teng.
Cheers.