Herceptin, what's so strange about it?

As for myself, those patients who are also required to undergo chemotherapy using this drug must have asked themselves; what happening there in the distribution channel?

First: the price (approximately USD 1.300) is not cheap for most of our society, second: it is not included in the list of medicines covered by State Insurance (Askeskin), and third: you have to buy three 440 mg ampoules first before getting one free dose. Strange isn't it? 

What kind of drug is Herceptin anyway? 
Let's take a look here.