I purchased the multisite component, menu items and virtuemart plugin. I was able to make the installations needed and it saved me so much time and effort it cut down my project plan by a week. I had a little trouble re-downloading the component to install on a another site but Edwin responded within less than 24 hours with great support a new ID link. After that I was able to download all of the plugins and components.
For those of us who have tried having one site with multiple domains but one database, this tool is an answered prayer. I had done it manually before but to be honest its messy, it takes longer and it involves too many headaches. It is worth the money and I don't consider it a lot.