Drupal has been powering millions of websites for quite some time. Each Drupal website has unique features, functionalities, and purposes. Offering a standard price factor for all these websites doesn’t look viable. It depends on the website's complexity, customization done in each module, and level of expertise. It also depends on the advanced features built into the website and the detailing of API integrations done to expand the functionalities and the module enhancements for these websites.The best way to arrive at the ballpark amount is to contact the sales experts at your preferred developer’s office.