Buying Nike Trainers and Dodgy Sites.

Can anybody point me in the right direction, I wouldn't have a clue about these trainers.
My Nephew has some cash he earned and wants to buy these.
He found these
http://www.freerunvon.com/men-nike-air-presto-2-carving-charcoal-grey-blue-p-132.html
or (I Think)
http://www.zefo.eu/nike-roshe-run-mens-yeezy-blue-green-ireland-p-227.html

I doubt that either of those sites are legit, or even if they'll ship anything.

But searching brings up masses of those types of sites and clones.
http://www.littlebabyjesus.eu/
http://www.run3ie.com/
http://www.ivankostelka.eu/
http://www.greatnewshoes.net/

And a Shedload more.

And the sites I know are legit are:
http://www.nike.com/ie/
http://www.footlocker.eu/
http://www.prodirectrunning.com/
http://ie.schuh.co.uk/
http://www.lifestylesports.com/
Etc..

But they have none of the pairs he looked at.. If they did, I assume that they would be a bit more expensive, but that's irrelevant as I can't find them.

There are a few German sites and French, but they don't seem to be there either.

Are they even released yet, officially?
Can anyone point me in the right direction, and at a decent price. I am going bleary-eyed looking at trainers and similar sites.
There are sites that look official and that have official sounding names, but now I am just lost..

Obviously a lot of People looking for them, I assume that's the reason for the so many 'dodgy' sites..