say i had 5 health and fitness websites. and i bought say 5 different 6PR backlinks for each one paying monthly for the link. after a few months of paying for these backlinks would the sites become self sustainable at a high page rank?
Nope.....if you stopped paying and they removed the link, you'd probably lose your pagerank at the next PR update. But, if you continue building a lot of links, you'll definitely increase your pagerank, and that will be sustainable, because they are free links.