Google AdSense which is the best ppc site have changed their policy which will unable people to buy an AdSense account.
Due to the difficulty in getting AdSense approval, many people decided to buy an approved account and it was working for them. According to AdSense policy then, if you have one (1) approved AdSense account you can add up to 500 websites without any approval. Even though the site is just a day old as fact that you have an approved AdSense account you can place ads on the site and it work 100%.
But unfortunately AdSense have change their policy; the new policy state that even though you have an approved account, to add another site to the account, the site must pass through a verification process. Adsense will verify the site to confirm the ownership of the domain name and to make sure it comply with AdSense policy.
continue from the source. http://okakasite.com/2019/02/06/no-more-buying-of-adsense-account/