Judas did not say this because he cared about the poor, but because he was a thief. As keeper of the money bag, he used to take from what was put into it.
Textus Receptus (TR) - John 12:6 >Εἶπε δὲ τοῦτο, οὐχ ὅτι περὶ τῶν πτωχῶν ἔμελεν αὐτῷ, ἀλλ᾿ ὅτι κλέπτης ἦν, καὶ τὸ γλωσσόκομον εἶχε, καὶ τὰ βαλλόμενα ἐβάσταζεν.