Most guys prefer wire - much easier to shake crabs out of it and it holds up well.
I've used both chicken and poultry wire.
Poultry wire is larger diamond shaped. Less drag in the water but little crabs ( bait stealers ) often go through.
You can use a bucket as a mold for a flat bottom net or get fancy and cut the wire for a taper bottom.
As Jalopy posted - it is easy to do. First time might take 30 minutes but after that it goes faster.
You can use Monel wire - it bends easy and holds up as well as stainless. I use a running stitch - fancy way of saying - overhand knot every pass.
Next time you are in a bait shop , study how the net is made.
It's fun using a net you built yourself.
What could be more mundane than dying of old age or of natural causes when there is death by misadventure to be pursued ? Skip