It looks like many person get the same problem! I heard that Yahoo make no profit with domain business and they are looking for the way to minimize this loss by increase domain prices. Yes, it is the time to act for Yahoo domains now. I have found new registar with
cheap domain transfer rates and I will start moving now!
As the increase infomation has been sent out by email from Yahoo and you see nothing about pricing increase from your Yahoo domain account so for sure, many persons (did not read the email well) will cry when they see the bill!!!