HELP! I need to find Good writers on finance/investing urgently!

[staffjam]

I am looking to have some articles written on Oil, gold, investing, etc.. But am really struggling to find writers who can do the subjects justice.
Where can i find specialist writers???
I am willing to pay up to $40 per article and all i seem to be getting are the poorly constructed SEO articles that have no substance or decent information. I'm not looking to fill up an adsense site - but add "great" content to an authority site.
Can someone please advise where i can find good writers for my sector - i may even up the budget if necessary.

Thanks for any advice you can offer.