Selling do-follow forum list are legal?

I saw a thread at DigitalPoint forums that one person is selling a list of 300+ do-follow forums + 300 do-follow blogs at a special price of $2.00 only? Is it legal? I really don't know if the forums he sell are very unique and was never seen easily in the search engine results. Could he made up his mind that selling do-follow forums which are easy to be searched through combination of keywords are legitimate? Some webmasters might need this for their link building and SEO strategies that could increase their backlinks thoroughly. But we have doubts in trusting this person because he could give us a fake one, or could be a legitimate one. Let's hope for the best and transactions will be much riskier.