Im sure most of you are aware of the website course hero. For those who are unaware of it, its basically a website dedicated to university students where you submit an assignment and get access to others. The content is stored on course hero's database and from the 24 articles I have used, each one has passed copyscape no problem. Not really sure what membership cost as I've been using my brothers account. Ive been using these on my Tier 1s and tier 2s and pretty damn convenient not having to scrape or spin articles.