I have set aside a small sum of money to purchase some PR6 and PR7 links for my bid for position directory. The bid for position directory is picking up on submissions, but it will have to improve on its PR0 ranking if I want to continue receiving link submissions. The directory can contain anything from real estate information to personal blogs — its not an issue at all.
Anyway the cost for putting up a link on a PR7 page will amount to USD280. That’s quite a sum, but I am willing to invest on it. I am sure it will produce results in the next Google PR update.