I have been looking into buying older sites to re-direct them, but i am struggling to come to some "criteria" for buying them. How far down the serps do you go, what age is the domain, how much traffic is it getting, mininum
PR etc?
I know all of these are a factor, but i just don't know how to value them properly.
If you already rank top 5 for your target terms, how big a difference is it going to make buying a site ranking 50 for the same term. Could it not just be worth buying links, writing articles & PPC instead of these?