1-
Do you know that in “Alibaba.com” you can find saffron with price between 10 to 30 US$ per
KILOGRAMS which is not really saffron(I have no idea where it comes from, they
say they can produce it as much as 5000 Kg. per month !!!), meanwhile the real
saffron is also can be found in Alibaba with a price between 1800 to 2300 US$ per kilograms.
2-
There is a flower similar to Saffron named Safflower which is
similar to saffron in color, but very different in taste, aroma and health benefits
and is much cheaper than saffron.
3-
Iran is responsible for 90~95% of the total production of saffron all over the world, and most of its products is exported. Some of Iran's dry eastern and southeastern provinces, produce most of its Saffron. In 2005, Iran grossed some 230 tonnes (230,000 kg) of dry threads, or 93.7 percent of the year's global saffron production. In the same year, second-ranked was Greece which produced 5,700 kg. Morocco and the Kashmir, tied as the next-highest producers, each one produced 2,300 kg.
[https://en.wikipedia.org/wiki/Trade_and_use_of_saffron]
[https://en.wikipedia.org/wiki/Trade_and_use_of_saffron]
4- You can detect real saffron by it’s taste and aroma, but if you are not familiar with it enough, you should know that it’s aroma and taste will reveal when you grind it well and then solve it in very hot water and let it be there for 20-30 minutes. After that you can have a better judgement about it. BUT take note that real saffron is NOT completely soluble in the water, yet after solving it in hot water, you should be able to see some dark red dots in the water.
For more information about Saffron, read this: What is saffron?