I've had one of each of the three Ameristep models. I used all of them 'til they completely rotted apart. The hub style model was the easiest to set up and take down; and most comfortable of the three. . I saw the doghouse at Walmart for $49.99 about a month ago.
I think like all things with the Primos name, their's are over priced.
NRA LM, NAHC LM, Buckmasters LM, The Second Amendment Foundation, GOA, NAGR, Palmetto Gun Rights, , ASAdisabled sportsmens' alliance, EDH, and Proud SC redneck REBEL still flying the Stars and Bars!