I have managed to get my new Google App Engine APp hosted on my domain. TO do this I had to sign up to a "free" google apps account.

The google apps account is asking for money and I have a free 30 day trial. Will my domain name that Google App Engine is using stop working when this 30 day trial is up?

Do I have to pay $5 a month or whatever it is just to have my google app engine app hosted on a domain?

Thanks