Amsterdam Coffeeshop Directory Forums

Super Silver Haze is relatively easy to grow. So why is it the most expensive one in most coffeeshops?

This directory says on the frontpage: The Directory has details of well over 1000 shops throughout the Netherlands. But on this page it says there were 666 of them in 2009: http://nl.wikipedia.org/wiki/Gedoogbeleid How many are there today and are some of the coffeeshops in the directory permanently...

What are the most common strains sold in coffee shops in Holland? And is it normally organically grown in soil or with hydroponics? Thanks.