Licensing for SSMS Tools Pack 2.5 has been quite a hit and I received some awesome feedback.
The version 2.5.3 contains a few bug fixes and desired licensing improvements.
Changes include more licensing options, prices in Euros because of book keeping reasons (don't you just love those :))
and generally easier purchase and licensing process for users.

Licensing now offers four options:

Per machine license. (€25)
Perfect if you do all your work from a single machine.
Plus one OS reinstall activation.

Personal license (€75)
Up to 4 machine activations.
Plus 2 OS reinstall activations and
any number of virtual machine activations.

Team license (€240)
Up to 10 machine activations.
Plus 4 OS reinstall activations and
any number of virtual machine activations.

Enterprise license (€350+)
For more than 10 machine activations
any number of virtual machine activations.

30 days license.
Time based demo license bound to a machine.

You can view all the details on the Licensing page .

If you want to receive email notifications when new version of SSMS Tools Pack is out you can do that on the Main page or on the Download page .

Version 2.7 is expected in the first half of February and won't support SSMS 2005 and 2005 Express anymore.

Enjoy it!