What, in your opinion, do you think a high or low PR does for a site? What would you think the benefits of a high PR would be...other than being able to sell links easier or for a better price
The last few posts have been regarding earnings (in general) and PR which I believe still has a relation, so we have a parallel question going on along with the original question. You are correct in your answer to the original question in that the payment value of an individual click has nothing to do with the PR.
There is only one big factor. How good you are to your advertiser conversion Though history also plays a little role.