As far being expensive for what you get compared to other travel...
Park tickets - no
Hotels - yes
Food - yes
Souvenirs - relative
The Disney magic - priceless
Disney Magic is perhaps priceless the first and second time you go. Surely by the third time, that magic is lessened. You may experience a new ride or land that Disney have opened, but the magic of going to something again can't be replicated again and again. So at some point, that 'Priceless' magic is gone and you see you're paying a lot of money for it