Because they only read text, screen readers and refreshable Braille displays cannot interpret photographs, charts, color-coded information, or other graphic elements on a webpage. For this reason, a photograph of a mayor on a city’s website is inaccessible to people who use these assistive technologies, and a blind person visiting the website would be unable to tell if the image is a photo, a logo, a map, a chart, artwork, a link to another page, or even a blank page.
The U.S. Department of Health and Human Services (HHS) also enforces Title II of the ADA relating to access to programs, services and activities receiving HHS federal financial assistance. This includes ensuring that people who are deaf or hard-of-hearing have access to sign language interpreters and other auxiliary aids in hospitals and clinics when needed for effective communication.
Costs for any project aren’t black and white, but having a general framework to approach the budgeting process will get you closer to an accurate estimate. Several factors will play a role in costs, and even just one change in scope can have a huge increase or decrease in budget. Bear in mind that it’s also important to find a designer you like and enjoy working with, and each designer will have his own rates, which will also greatly affect the end cost of your project.