Please make sure to do the math correctly, using the proper info resources.
First, do not use this site or their outdated cost map to calculate train fares. Next, do not use RailEurope or any other ticket re-seller to calculate travel costs. The RAilEurope info is nearly always incorrect or inflated.
What you should do it use the correct website for comparison shopping - www.oebb.at. This is the website of the Austrian National Rail Service. In addition, you should consider the cost of the Einfach Raus ticket, which is a ticket for all day regional travel. The cost of this ticket is 33 Euro for your whole family each day, so 11 Euro per person. How can a Eurail pass compete with that?
Bottom line is that this website, geared towards novice and/or budget-minded travelers, should better inform themselves about other economical ways of traveling outside of the railpass. This website should also stop selling railpasses as it is a conflict of interest, in my opinion.