Do I need to pay for activating my account for my each product? Or just once activation for my all products? Does it take $5-$30 from vendor account for each charge back?
No, you don't. (The post above this one is just mistaken, I'm afraid). You're actually allowed up to 500 products in one account, as a vendor. But you only get one marketplace listing per account, and you must pay the same commission-level on every product within the account. You can avoid this by opening a new account for any product(s) you want, but they charge $29.95 (I think) each to open subsequent vendor accounts. See this page for further details.
You pay $49.95 for your first account which can have 500 products for the one time fee $49.95. Each additional clickbank account you get costs $29.95. I don't know about chargebacks? Mike