I wasnt sure how sturdy this was going to be, but once I got the roof on it it seemed to stabilize.   Hope it makes it through Michigan winter
I did it myself and I am a 53 , 66 yr. old woman.  It took me about 5 hrs.  Never underestimate the ability of a woman with power tools and a bit of persuasion by a rubber mallet.  I do think it is a bit overpriced. That is why I gave it 3 stars.