Today Yahoo begun their new pricing for PCC adds. The update comes with other changes including lower bid prices for higher add relevance.
Here is an excerpt from Yahoo’s email notice:
Minimum Bids are no Longer Fixed at $.10
Starting today,the minimum bids for some Sponsored Search keywords are no longer fixed at $.10. Minimum bids can now be lower or higher than $.10. Content Match minimum bids currently will remain at $.10. Throughout the next week,you may start noticing new minimum bids on some of your keywords. You will be notified by email and within your account when the status of any of your keywords is affected.
check out Yahoo’s site for more details pricing change.