Why study public relations is expensive ?

be cues it is the practice of managing the spread of information between an individual or an organization and the public.

not only PR but each study is expensive.
it is govt.
responsibility to facilitate the public

I beg to disagree. Actually, there are insitutions that charge less for a Public Relations course; although I took mine from a reputed school that charge high. (It was my personal preference because I wanted to get the best quality education).  Some online schools even offer it for free, and yet provide top quality materials. Check it out with Coursera, Open2Study, and other online schools.

Studding Public relation is expensive due to difficulty of globalization barriers.

It is expensive as it is offered in only select universities. This makes the choice selective and consequently as a higher cost.

I have never studied public relations and is learning thru my own personal experience. If it is indeed expensive, that maybe because the main players in public relations are PEOPLE - priceless. And public relations is a matter that should never be taken for granted.

because its critical type of works 

because its critical type of works , and its all depend on (TRUST) so  all study will reach to the final point , HOW YOU CAN GET CLIENTS TRUST ON YOU.  its Human nature & each person have deferent mentality and you have to work and convince o get that trust.

so in my opinion its deserve to be expensive but for the people who has feeling that he have talent in this job .