I am interested in purchasing an expired domain name on TDNAM, which currently has a decent PR. My question first is... Will the domain name keep it's PR if I purchase it? How does that work?
It all depends on whether it will keep the backlinks pointing to it, if the backlinks stay, then the domain can keep it's pagerank.
Want to add that you must verify the vailidity of that pagerank on many fake checkers. I've fell for this before.
the best way to check for real pageranking is by checking at Dnscoop.com where you get all the details of the website and they are not fake... but most of the time a expired domain lost the PR after it get expired because after the domain get expired the domain pimps try to sell it and park page reduce the ranking... so if the site have PR6 then after get deleted and when you buy again the PR will drop to 1 or maybe 0....