i want to start up a green house. i want it to be of a commerical grade but still affordable.any good sites?

Answer 1

"Rough Brothers Greenhouses", located in Cincinnati, OH has been in the business of building greenhouses for over 70 years. I worked summers for them while I was in college. In addition to commercial greenhouses, they manufacture greenhouses for homeowners. They make both freestanding and attached greenhouses and ship the kits all over the country. Here is their link:

http://www.roughbros.com/

Good luck with your endeavors.

Answer 2

Nope I have not the slightest idea. :D