No offence but this article tells us almost nothing. How can anyone make even a mental comparison when the prices quoted include or don't include various sales taxes.
The proper comparison is the pre-tax price expressed in whatever currency you want to pick.
It means nothing to write an article arguing that the iPad is "more expensive" in country A than country B if you aren't taking the tax issue off the table first. What's important, especially in terms of Apple's policies as a company (presumably what this blog is at least partially dedicated to), is that Apple is artificially jacking up the price of the iPad in *some* countries irrespective of the taxes and duties and exchange rates.
That's the real story.
Yes, and no. Because apart from taxes, there are also differences in regulation that potentially cost Apple money. For instance, buying extended warranty in The Netherlands (e.g. Apple Care) is pretty useless as you are already covered by law for defective products depending on a normal lifetime of a product (something sellers try to hush up or deny generally, so most people are unaware).