Just the initial costs. Like domain, host, software cost, kind of license etc. I´m curious because sooner or later I´ll buy a Vbulletin Owned license, and I´m gonna register my domain at ASO (asmallorange.com). They will be my host also. Apache and MySQL are free software, but you probably spent some extra bucks to upgrade your desktop computer. What modifications did you do? Besides adding more RAM.