Baidu is about to increase cost for unverified PPC accounts beginning from Aug 1, 2013.
- For unverified business accounts, promotion cost will increase from additional 10% to 20%.
- For unverified personal accounts, promotion cost will increase from additional 10% to 20%, no matter whether the account is authenticated or not.
- For verified accounts who have only one star credibility, promotion cost will increase 5%.
You can login to your account, by clicking the 
next to credibility star, you can see the details of increased cost.
It is only for customers with one star credibility and those unverified, however, customers with high credibility will see no notice but the credibility ratings:
If you are unverified or your only have one star credibility, contact your Baidu account manager to fulfill verification and credibility level increase.
The authentication and verifications are two processes Baidu implemented into their PPC system. The former requires the advertisers to submit several business documents. But PRE-QUALIFIED authenticated account can apply for verification with “V” status; otherwise, he won’t see the application link.
Verified accounts will have a “V” icon in both backend and frontend while matched and been displayed to search users:
