Quoting from [Tal]:I would like to know exactly how people price coltan ore and what the current Coltan prices are. Does anyone know where I could find the prices?
You can find a lot of popular price here in http://news.alibaba.com/134291_Textiles.htm totaly for free!!
These price be updated everyday, I myself find it very useful, hope you can find the price what you want!
Google.....