
I really think it depends on the chickens.
My chickens roamed far and wide. I couldn't see them from the house, they crossed the road and were nearly hit twice (that I saw) and would parade right down the middle of the road and march up the hill.
On vacation in DE we drove past a lovely flock of SLW scratching around the yard. On the way back to the house we drove past a dead SLW laying at the side of the road.
I too think the dome is cool but would never spend that kind of money on it, especially because it's just the start. You'd still need to invest in predator proofing it.
I have about $2500 into my entire setup including coop (converted shed), a 28x12 run with 16x4 annex off the back solid roofed predator proof run attached (built from scratch), three lengths of 164' x 42" high poultry netting that enclose 1/3 acre of well planted grounds, 10,000-volt charger, fence posts, gates, chicken supplies... everything. I have housed up to 30 birds. In the 3 years they've been in this setup, I've only lost one young pullet to a hawk. The grass is green and they are happy and that makes me happy and therefore worth every penny.