Papers industry white

We're in the process of launching a white paper section for our website, and am just wondering if anyone has any feedback on the rates they charge? I'm personally in favor of a per lead rate - or at a minimum of a dual model of flat rate vs . ... If you can deliver qualified leads in aviation, $80 seems low to me, but I don't know your industry. Here's what we look at: How targeted are the leads? In other words, does the advertiser only want a small segment of decision ...