Running a web app in Grails vs Django
I think from an operations perspective things are going to be close enough that you can base your decision on other criteria. If you can afford a virtual private server with at least 256 MB RAM you will be able to deploy Grails applications. If the cost seems like a lot check out Sun. They are really pushing hosting solutions based on their product stack and there are some greats deals available. I have free hosting from Layered Tech for a year through Ostatic.
I'm currently in the planning stage for a web application and I find myself trying to decide on using Grails or Django.  From an operation perspective:

Which ecosystem is easier to maintain (migrations, backup, disaster recovery etc.)?  If using grails it'll probably be a typical tomcat + mysql on linux.  If django it'll be apache + mysql on linux.
Does django or grails have a better choice of cheap and flexible hosting?  Initially it'll probably be low bandwidth requirements.  I'm not sure about the exact specs required, but from what I've been reading it seems like django would require far less server resources (even 256MB server is ok) than grails.