Hello Mark,
The upgrade price is only if you own the previous version of each tax list in question.
Yours current one does not have a date as it was created and offered before this whole design was thought up. But, it is not the previous version to 2008, therefore you will need to purchase the 2008 tax list at the full price.
Very sorry for the confusion and thanks for asking. Let me know if I can assist with anything further.
Jeff |