I bought this shed and found the instructions easy to use and the product is well made. It took me about 4 hours alone to erect it and the only difficult part was fitting the roof. 

As I was completing the last two parts I found both ventilators were broken and the bottom left hand catch on the window was also broken.

Hence the 3* rating. If I could find a way to report this I would do but your website does not seem to make provision for this.