I am very satisfied with my greenhouse, and yes, the whole thing arrives in just 2 boxes. be sure to read the one page of written directions the start of the instructions, they give you good insight of some consistent rules you will find throughout the procedure. After that there are only picture instructions which I found to very accurate and exact. Also helpful are the pictures that show what NOT to do..they saved me a few times.
Assembly went great and everything lined up perfectly. Be sure to anchor it down.