Secure Transaction script

I am developing a website for registered members. There will be different modes of payment: credit card, online banking, and money order. The payment option will be included in the member's account area and if the member wants to update his membership he has to fill out a form and submit it to us. The form will include the person's information. For credit card options we will be using PayPal and CCavenue. I was wondering if you could give me an exact quote of how much it will cost me if I just want the complete script for the information I provided to you above. We will insert it ourselves into our website. Please get back to me as soon as possible. ONLY PEOPLE HAVING IMPLEMENTED THIS MAY ONLY [login to view URL] PLZ EXCUSE.I NEED TO SEE UR WORK. I NEED IT URGENTLY.