There is foil version of every Pokemon (except Keldeo
, and Genesect
who haven't been released yet). However you may have trouble with Kadabra
, since there are only 2 or 3 versions, all released before 2003.
When sorting cards in a binder you should never put more than 2 cards into one pocket. Otherwise the pocket gets stretched out, if you only have one or two cards in it later it is likely to fall out. Your best bet is to organize it in number order, and put any extras in additional pages in the back.
Umm... As for your question about what to buy, that largely depends on how complete your collection already is.
BTW reverse holos started with the Legendary Collection.
And when you say 'foils' are you referring to reverse holos, as opposed to regular holos?