I've done both Big Laughing and an indica from their mix that I think is a kush. Both were fantastic, Big Laughing is the best strain I've grown. Has just the kind of silly high I love sometimes, and is very potent. Both strains were easy to grow and very forgiving of grower's errors.
"why are they so pricey"
The $280 question. Genetics are good but compare them with Cannabis Cup winners at Attitude and it's ridiculous. My guess is that its a business choice - more money per sale but less sales; less work for the same amount of money. With genetics and breeding skill to justify the price to some people. Expensive seeds will draw some people.
The Pick 'n Mix owner was on asking suggestions for new lines to carry and I pitched Greenthumb. It'd be great to be able to buy a single Origional Cheese fem seed for $30, keep a mother and grow clones.
"and what is their best strain."
Endless Sky is their big seller, 42 - 45 days flower, very potent. An indica stone I believe. They breed clone only fems like origional Cheese & OG Kush, lots of interesting strains.
4 stars on Green Man's page, reliable.
http://www.seedbankupdate.com/su.html
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http://www.drgreenthumb.com/cannabis_seeds_GreenthumbSeedsEntrance.htm
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