It's just a lot cheaper if you know you are going to train more than one assistant!
First single user is $900 and each additional user is $600. So your first 2 users will be $1,500. If you have a 3rd, you can quickly see that buying the package is the right move.
Why would you buy 3 if you know you will only train 2? Simple, no one can guarantee your employees will stay and these user licenses never expire and user training is not transferable.
So buy the 3 user package and feel confident you bought the right package for training your audiology assistant.