Obtaining Archives of USENET?

Academic Researcher asks: "Google took over Deja and built the mammoth Google Groups, which is a near complete archive of USENET dating back to early 1980s. For an academic project, I need to analyse a lot of USENET data. The Terms of Service for Google Groups will not allow automated access (and even so, I'd have to write a bunch of tools and reverse engineer it all). Inquiries about purchasing copies of the archive have gone unanswered. No one else seems to have such an archive. Apart from this meaning that world has one single USENET archive (I hope they have backup floppies!), how can I obtain historical data for research purposes ? I'd happy pay money for DVD's of archival material if they were available. Can anyone help"