6? for 0,5 g is very pricey. You normally pay that for world-class saffron, the really good stuff. I'm a little bit sceptical about spanish saffron too, because it's basically the same thing as with Darjeeling tea - the farmers yield a specific amount per year, but when the product hits the global markets, the number got mysteriously multiplied by x. (insert random, high number ;P) But this is true for almost any saffron, no matter where it comes from. Anyway, I would avoid powdered products, and always check the smell. Some people use coloured corn fibres and stuff like that.
How old are these cardamom pods, goncalo? Always felt that cardamom keeps it aroma quite a while, but you never know for sure, how long it lay at the suppliers to begin with. Check their seeds. Fresh cardamom has really dark, often quite sticky seeds. Older cardamom seeds are more brownish and dry, at least from my experience (:
Greetings!