Im interested in knowing this too. they are very very cheap but are they worth it?? who knows? Look at these prices>>> http://www.cannabis-seeds-bank.co.uk/kc-brains-75-c.asp
I am currently growing a few right now. The best one was low stress trained and then taken outside in may. It is about 7.5 feet right now and in the 3rd week of flower. I must say it is a very strong plant and can take a lot of stress I would say it is well worth the money.