Now, we have a good possibility for diagnosis of many common purchasing problems.
Today, in Google Apps: I purchased a domain through google, but I cannot get my blog to transfer to it, we see a suggestion that not all such problems may be caused by Blogger / Google.
I would like to point out that in most cases like this the root cause is generally that your purchase charge was declined (usually due to your billing information within your Google Checkout being incorrect or out of date). You can check the status of your order by logging into your Google Checkout account that you used to make the purchase at checkout.google.com
In cases where a WhoIs lookup on your domain gives us something similar to
MYNONXDOMAIN.COM IS AVAILABLE mynonxdomain.com appears to be availableyou might want to verify the status of your domain purchase, using Google Checkout. You can do this, even as you wait for your bank to tell you whether the registration charge has been posted against your bank account.