Build a new website and transfer data from old site

Hi, I want to have a website which looks clean and simple. I have the following requirements for the website 1) Create a Joomla site for a website and host in my hosting account 2) Put a free template – Purity 3 of joomla 3) Transfer articles from drupal site (nearly 500 articles) to the new joomla site 4) Transfer articles from another joomla site (nearly 40 articles) to the new joomla site Kindly give a quotation for the above work. Thanks