I’ve seen so many crazy peoples buying domain just for the PR. If you are one of them and trying to buy a PR domain then hold for some days. PR update is just some days ahead and the pr 4 site may be dropped into PR 0. This is not a joke. I’ve experienced that. Actually I was also crazy about PR domains some times ago. Here is my story. Somebody was offering a pr4 domain just for 4$. Thats great! I thought. He would only point the domain and I need to register the domain.
I just bought the domain. PR update was after 3 days. I spent 4+8 $ to get that domain, that didnt have any backlinks or any listing, that was just for PR. And of course that did not have any keywords too. The domain dropped into PR0 and I lost my 12$. So, I strongly recommend you to not to buy domains just for PR unless it have a strong backlinks and popularity or keywords.