$500 for a link from a PR8 site

A year or so ago it might have made sense to purchase a PR8 link for $500 per month, but certainly not now. Google no longer provides a boost large enough enough to warrant that expense based on PR alone. The days of a PR8 link making your site a PR7 are long gone.

Google now tends to view high pr links as “purchased” and of less value then they did in past. You would be much better off purchasing three or four PR6 links or ten PR5 links.

Yes its ok to have links. Does it make sense from an ROI (return on investment) standpoint? Not in my oppinion, but there are variables like whether the site is considered a Gambling authority site that may make it a risk that many would take. I personally wouldnt do it though.

If the link isn’t related to gambling, I wouldn’t even bother. Google seems to be discounting any links not related to your site. However, if the site is a PR8 and gambling related, then it may be worth it for the traffic plus a bit of PR boost. I haven’t seen any gambling related sites rank that high though, PR6 seems to be about as high as you can go in this industry.