If you buy now, you'll get:

Instant key delivery.

A 30-day money-back guarantee for the program.

The program can be used on several computers you own.

Up to 3 installations per month.

Lifetime licence to use the current major version (e.g., 3.X).

A 50% discount for the next major version.

Priority technical support.

Personal licenses:

Chameleon Startup Manager Pro	Chameleon Startup Manager Standard
License for 1 user - $29.95	License for 1 user - $24.95
License for 3 users (1 license for FREE) - $59.91	License for 3 users (1 license for FREE) - $49.89
License for 5 users (2 license for FREE) - $89.85	License for 5 users (2 license for FREE) - $74.85

Lack of features in the standard version:
Most of the new features
Working in Windows Vista/7 without UAC prompts You can start programs with administrator permissions without confirming the privileges
Applying configurations 'on-the-fly' without restarting Windows Necessary programs can be run and unnecessary programs closed using one button without reloading Windows
Change startup profiles for all Windows users
Automatic delayed program launch Each program is launched in sequence after the previous one finishes starting

Information about commercial licenses is available here.