is callisto legit?

Callistofx is a group of masked men giving knowledge on live predicting the price movement quite accurately. Are they legit? Why do they keep asking us to join their 'FREE' premium. There must be something fishy about this as they are constantly bragging about how its effortless to make 50-500 usd a day. They are live everyday for the london and new york session but only give signals to their premium group so they say. To join their 'FREE' premium you will need to deposit $700 usd into their broker which is avatrader. Does anyone have any experience with them?