Solar Gem Green House

Hi All! Ii am getting ready to receive a Solar Gem Greenhouse. Does any one have experience with one? I will have it delivered to me inn a few weeks. I have been told that this will be delivered with a complete setup. Meaning, the fiberglas unit (which has no seams) will be placed into into a dug out area to place the greenhouse into. This would prevent the greenhouse from moving in a windy condition. Gravel will be placed into and around it when finished. All sounds good. So if you have one, tell me your experience If you do? I welcome any positive or negative responses! Thank you!