Is there any limitation in the kind of items / products we can add?    

There is not such script level limitations.

The possibilities are truly endless with iScripts PrintLogic. If you have any features that you wish to add or if there are any changes that you would like to make, the iScripts PrintLogic software is open source. You can make these changes at any time. We even have programmers and designers available at iScripts who can make these changes for you. For more information, send an email to sales@iscripts.com with all of the features you would like to add or project requirements. One of our project managers can then give you a free project estimate or proposal.