Firstly, spanish weed is not bad at all. Many people grow critical even over there. How many clubs have you visited?
Secondly we have over a hundred weed clubs so there is an industry here, not a load of hobbyists. We have a huge mix of international growers with a wealth of knowledge.
Water in my area is EC 0.3 but only in some areas. We all use air con, not tents.
My Jamaican dream sold for €22/ g. I have photos of the board. What does your weed achieve? I get much more that 3k.
So whether or not you like to believe that we grow well, fact remains that we can sleep well with 20 lights and not go inside. Even 20 lights x 3k sounds attractive actually.
If you think you could do a better job of EX patting , learning another language and making new contacts in a foreign country, you are more than welcome to try!