In terms of development, responsive design is not an order of magnitude more expensive than any other form of web development, the only issue from a design perspective is ensuring that your design scales or has appropriate break points to deal with different interaction modes (desktop mouse and keyboard, tablet tips of fingers or phone thumb), so you may want to mock up key features like mastheads, menus and tables to see how they behave on smaller and larger viewports.
The main issues and costs we find come around testing, both user testing and functional/ cross browser testing. You will need to make sure your built design works on the plethora of devices, OSs and browsers available. What you are trying to avoid is the situation where you have to maintain some form of browser/OS whitelist, detect this and send back different content, as this becomes very expensive to maintain going forwards.
The average cost for designing a website ranges from $1000 to more than $100,000. But Website Designing cost depends on the following things.
- Domain and Hosting cost
- Used Technology
- Added Features
- Theme or customized design
- Logo, content, images, maintenance
- Company's brand
- Strong creative design skills
- Logo Designing
- Banner Designing
- Website Design
- Sound HTML knowledge
- Landing Page Designing
- CSS knowledge
- Good experience in web design
- Graphical user interface (GUI) design using HTML/XHTML/CSS
- Design & layout of email newsletters