Updates are free - ver 6.01 didn't cost anything if one already had ver 6.0.
Upgrades - ver 5.x to ver 6.x costs.
Many software packages do the same. Roxio Toast, Parallels, Microsoft Office, iWork, iLife, etc, etc.
I agree it's a bit disappointing to have bought ver 3, 4, 5 and find that the discounted price is available to all, not just existing customers. Good luck for new customers I guess but I've still upgraded at half price.
