this is awesom ... how much would cost a caracter ?

Depends on how complex is your character.

If you have a reference picture of some sort, PM me and I can quote you a price. :)

I usually find it easier to work with those parts if you set them with Elmer's glue on the inside. that way they stay pointy after it all dries. firm up the paper with a toothpick and a thin layer of glue then when you fold it into place a dot of glue on the inside tip and they won't peel or smash. its not as good as hardening up the whole thing with resin (like some people do with full size rifle papercraft) but its good for preserving certain creases so they don't try to unfold on you later.

i need to get back into papercraft but I can't afford the ink =/ i miss working at kinkos...

Nice !

Is that hard to do ?
What kind of software are you using to make this papercut version ?

It is not easy, but I'd like to believe that I've written a good enough instruction for it so anyone can do it if they tried.

This: http://www.tamasoft.co.jp/pepakura-en/

Ok, thank you !
I'll try this way to make my own object.