The Sigma price was purely to give an indication and show that its a relatively cheap and common chemical not something esoteric.
IMO, whether its $950 or $27k in the US, that is still outrageously high, considering that in the UK the same drug used to be sold to the NHS for under £8 a dose.
In fact, as its out of patent, I'm surprised people don't just point to the price in other countries right away before making excuses for the manufacturer.