There's quite a bit of misinformation here.
I am originally dutch but I live abroad for a while.
1. In Holland you need to pay taxes on purchased goods outside of Europe, not all goods you have to pay for, only if the total is more than a certain amount.
2. You have to buy it minimal 1 year before you arrive in Holland if you lived in another country.
3, If you want to import it after you lived in another country and want to live in Holland again you need to inform them before going back to Holland.
4. You have to at least live in another country for 1 year before you can import tax free.
There is a very simple way around this, if you buy a Laptop for instance fly to Belgium and then cross the border, Belgium can't make you pay the tax on the laptop since you are not Belgian.
There is no Customs on the borders in Europe so no problem.
To the OP, be careful with it, you might already have the Mac but asking someone else to do this is in my point of view stupid.
I would not do such a thing for anyone.
And dutch customs are smart, if you get caught you pay the taxes and a fine.
I see, thanks for the detailed info. Personally, I would not ask this of anyone but real close relatives either. Luckily my sis and me have a really strong bond
In fact, my sister will actually arrive in Belgium, so I guess I'm lucky on that part!