Living cost with family in riyadh

Hello,
This question is asked many times and online tools can be used to calculate. i will speak from the experience of living here for 30 years and try to answer your questions keeping my answers restricted to saving only. W
No levy fee - you will save upto 300-400 SR per month per dependent. That means, (300 X 4 )  = Sr. 14,400  / year.....although pls ask them how your company will make there is no levy fee?
Education expenses means you will be saving SR. 15,000 * 3 = 45,000 / year
medical insurance is provided by sponsor
As far as your salary is concerned, it really depends on your expenses and life style, for some they will save decent amount from this salary and for others it is not enough.