The SeETL Full Version is simply a copy of SeETL that is licensed for all of the products features.
This version would only be used by the core ETL development team. It is offered at a substantial discount to the summation of all the features to recognise the fact that very few individual people actually use all the features of SeETL. The SeETL Feature set is now so broad that the people who use it hold disparate jobs.
For example ETL Developers do not perform Business Requirements Definition because that is simply not their job and does not match their skill set.