Because they want money... In all honesty, upgrades should be free/cheap to existing clients with all software; they gouge you then gouge you again...

comeon, theres not that much differance between CS1 and CS3, so why buy it 3 times :x

I am a Web Development Contractor, I do not work for UBBCentral. I have provided free User to User Support since the beginning of these support forums.
Do you need Forum Install or Upgrade Services?
Forums: A Gardeners Forum, Scouters World
UBB.threads: UBBWiki, UBB Styles, UBB.Sitemaps
Longtime Supporter & Resident Post-A-Holic
VNC Web Services: Code Modifications, Upgrades, Styling, Coding Services, Disaster Recovery, and more!