Of course they won't be reprinting the second series, it says in the advertising how many cases have been produced.
There's no such statement about series one ... really, I expect them to just keep making them for the rest of the year until the next series one comes out. If anyone expects cards from series one to be worth anything in the future, or increase in value, they are sadly mistaken!
I have always been wary and thus have not bought a box. You can just never tell. Has anyone ever seen a numbered insert appear on ebay that they have themselves? That would certainly rip you guts out.
I've started a thread that may complement this one. Check it out