I normally do not ask many questions here but today while working I was thinking about creating niche blog networks and selling them. Right now I'm working with a few different platforms but focusing on tumb lr as it's pretty easy to find pr2 and pr3 domains. Right to my question: What would be the value of a pr2 or pr3 tumblr page furthermore what would be the value of a complete network of 10 pr2 and 10 pr3 all niche related. I do not need to hear on how to monteize them just the straight value of the network. All niche blogs have a $3-5 CPC.