http://www.metalprices.com/
http://www.metalbulletin.com/#axzz3jdRBzjBB
http://www.fastmarkets.com/
All the previous sites can guide you about the current price and historical prices for any element, but they are not free.
So, if there any one can help me to know the average price of these elements I will very appreciative for his effort.
Elements: Ti-Mo-Nb-V-Al-Fe-Zr-Ta
Thank you in advances