HTC EXPLORER LOCKED TO 02 ?

HI THERE HERE WE HAVE A HTC EXPLORER WHICH IS ONE WEEK OLD LOCKED TO 02 THE PHONE IS IN STUNNING CONDITION,COMES WITH EVERY THING IN THE BOX FROM NEW,, IT HAS GOT ANDROID 2.3 GINGERBREAD WIFI BLUETOOTH GPS AND SO ON I LOOKED IN TO GETTING IT UNLOCKED AND WAS TOLD IT WOULD COST 5.00 TO DO SO ANY QUESTIONS PLEASE CONTACT ME