"You get what you pay for."
The pieces aren't individually labeled, so if u don't keep them in their respective bags, you may end up with a differently shaped greenhouse, which is quite noticeable when you have 2 or more of them. 

The instructions stink, and some of the pieces in the manual look nothing like the pieces you actually have, so you may end up confused and annoyed. The plastic covering wasn't the best. Essentially, it tore at the seams upon putting it atop the frame. And it doesn't have the openings that are advertised on the picture; ie false advertising. 

On a positive note, it Does keep my plants warm! But overall, it's no good. Spend the money on something sturdier.