quite expensive for some auto generated articles. nobody cares about copyscape its just good to verify copyright issues, but google doesn't care about it.
some duplicate content doesn't hurt. in fact 25% of the web is duplicate content (according to google) and thats perfectly fine. many new seo's still belive the duplicate content myth and of course sellers of article writing services keep this claim alive, but its a false assumption. to any newbies: just don't listen to all the idiotic theories about duplicate content and test it for yourself.