We looked a long time at a lot of different types of greenhouses before deciding on what to purchase.  The greenhouse kits just seemed to be the way to go for someone just starting to venture into this area of gardening.  It’s not a real large garden greenhouse so it was easy to put together and we didn’t need to prepare a foundation because it fastens directly to the ground.  We’ve been able to keep lettuce and tomatoes, spinach and cabbage growing into the fall and are having a blast.  We purchased ours at BEVO Works online and really had a great experience all the way around.