Mine was about $1 per foot Canadian which I thought was very expensive, so yours seems even more expensive. If you bang in solid corner posts and stretch it in between these it works great.
Some birds will fly over it, then not be able to get back in. I leave a small entrance just big enough for birds to go in/out, and of course most of them are always out.
Had an eagle try to take a duck within the fence last week too.
Banties will fly over and likely go through the holes too.
Keeping it from grounding is a PITA. The fencing sags at times and shorts out. Consider wing clipping.
Don't know how long it'll last yet, no change in two years though.
I can't think of a better, moveable alternative, at the same time it isn't perfect. I've never had a dog/wildlife (excluding the eagle) get in.

We are using the netting from Kencove and feel it was worth every penny. We added a few extra stakes to keep it from sagging. Since we are raising meat birds to 8 weeks, I can't comment on them flying over. Once in a while one will get out, but they just come right back in. Their feathers protect them pretty well from the shock.

As far as shorting out goes, we haven't had that happen except for when we mowed a portion of it!!! The directions are very specific and you shouldn't have problems.

We close ours up in the hoop houses overnight though because the netting won't protect against flying predators!