Built my own 8 x 16 lean-to last summer. The cost was about the same as
a cheaper kit but is much better built. Also most kits don't give too
much thought to exhaust fans and ventilation. Unless you only want to
use for a very short time each year this is just as inportant as
heating. You can view my greenhouse at the link below.

Marv-Montezuma, IA
http://community.webshots.com/user/vmwood