This is my first greenhouse and I don't have many regrets with purchasing it except perhaps I should have gotten a bigger one.  Considering how many parts there are, I'm impressed with the organization (labeling) of pieces and instructions.  A couple of the aluminum parts were bent slightly but that never presented a problem for assembly.   A plastic clip was missing and I've requested one from Palram. The door doesn't shut easily---perhaps it's not as square as it needs to be. 



Pros: It's light enough that a couple people can pick it up and move it around in our back yard.  We live in a low wind area and its not going to blow away.  I'm really amazed with how hot it gets inside during the day.  
Cons: I'd like to add shelving but I see that the shelves would cost about as much as the greenhouse and I'd have to disassemble the greenhouse to get the necessary screws into the tracks.