I have two authority websites with PR3 homepages and also inner pages with PR2 and PR1. Both websites are 50+ pages of unique content and have very low OBL.
Link rental is better for SEO purposes than buying a link. When you rent a link you have full control over the link and the anchor text meaning you will be able to adapt to Google changes in the future if they decide to change backlink anchor text ratios.
The websites are in the Gardening and Photography niches. Message me for URL's.
The monthly price for a PR3 backlink is $15 and you can change your link or anchor text at any time. Lower PR inner pages are also available. Contact me for more details and prices.
This price covers the first month's rental and advice on SEO best practice for your website to get the most from your link building. Further months can be setup after checkout.