Binned the el cheapo utility knife last w/e as it was quite flimsy (exposed blade in plastic casing version) & felt like it would fall apart when cutting up cardboard boxes and could barely handle cutting through sticky tape!
Seeking retractable utility knife that is both durable and sturdy - budget < $20. Primary use would be opening parcel boxes and as a cardboard box cutter.
https://www.totaltools.com.au/108567-dewalt-18mm-snap-off-kn…
We use these at work and they are quite nice. $19