Can we setup a VM with sql management studio and execute an SQL job on azure database instead of worker role ?

I found this interesting article where we can use mobile services to setup an SQL job.

http://fabriccontroller.net/blog/posts/build-your-own-sql-server-agent-for-windows-azure-sql-database-with-the-scheduler/

However the pricing is unclear to me. On the mobile services pricing page it allows selection of the database size. I guess the charge is only for the database in use and not for the mobile service per se which is great. Am I correct ?