vBulletin is a commercial product, and you must therefore buy a license before you can use it. To offer site owners the greatest possible flexibility there are two licensing options to choose from:
Purchasing a leased license will allow you to run vBulletin on your server for one year. During this period you will be entitled to technical support and software upgrades.
After this period you will either need to purchase another license or discontinue using the software.
Currently a leased license cost $85 a year. At the end of the lease period you can either renew the lease for another year or purchase an owned license.
If you choose a leased license option, you will ...