It's understandable to think that it's a crazy price for this. I don't know the specifics of the funding from the government, but usually initial high prices are the result of years of research and development. That R&D has to be paid for some how.
Now, that's not to say that the "government" has never paid stupid amounts of money for things like toilet seats and hammers, but in the case of medicine it's usually justified. Again, I don't know the details but this is usually the case for this sort of thing.
There are similar remedies that until recently were too costly to give to the public, surgical glue based bandages for one. Now you can get them at the grocery store for just a little more than traditional bandages.
This is just like any new technology, like LCD displays. Eventually the R&D will be paid for, and they will be produced in quantities that will become acceptable for the average person to purchase.
-illc0mm