I have a few questions 1. How is having a high PR a benefit? 2. Does it effect SE ranking? 3. Does it only benefit those who want to sell links? Ive heard a few conflicting stories, but basically what i habe gotten is PR only helps link sellers. I could be wrong im getting my infor from others, but i heard there is no real value in PR except to link sellers
There isn't a one-to-one correlation between PR and rankings. You can see low PR pages outranking high PR ones in many cases. If you build useful sites and get in links in a natural manner, you should do ok.
You already answer your question. PR is only useful to those site that sell links because some of their link buyers think that high PR can help to improved SERP. PR is a score for your site based from the quality of links that you've gain. PR has no effect with your rankings. You can increase backlinks as long as you gain more quality and relevant links.