very expensive, they charge for everything, first 19.9dollor for 150credits per month, it will cost you one credit for one minute live chat, 10 credits to read a email. you will receive many emails from their free members in a format, it will cost you a lot of money to read those nonsense emails. then when you run out the credits, you have to pay 0.8 dollor for one credits. their members communicate with you in a unnaturally way, you feel you are chatting with  robots