Excuse me, im new here - holy grails

hello, i have been interested in forex online since 2001. i believe i am the finder of several holy grails, based on all the wonderful indicators i have familiarized myself with. i am curious about the so-called trade robot available at traderobot.com. they dont seem to work !? they are free if you ‘use their system’ whatever that is, but one is $500 if you have your own system. i dont understand. anyway, whats up wit you ? what are your favorite indicators ?