If you buy babies, you'll have about 6 months to separate them...and that's only if you end up with 1.1. If they turn out to be 2.0, they'll be fine until they're about 9-10 months old...and maybe longer than that if they're never around females.
In fact, I separate juvies by sex in order to prevent premature breeding, which can be devastating to a female. I generally keep up to 3 juveniles (of the same sex) per cage and have never had any of them fight.
In my experience, juvenile males housed together won't generally fight. Just make sure they're given sufficient hiding areas and cage size. Of course, you don't want to keep multiple males in a cage with females.
All in all, considering a group of adults can be kept (and bred) in a $4 Sterilite or Rubbermaid, I really don't think having two cages ready when you buy two baby Crested Geckos should be much of a concern.
-Anthony
>>some good advice so far.
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>>another thing to consider is this: if you get two, make sure that you can provide a second cage if they both turn out to be males (either you notice aggressive behavior, or bulges on both of them). i know its possible to keep two males together without fighting, but its better to be safe than sorry, right?
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>>mike
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Anthony Caponetto
www.ACreptiles.com