Do you have a website?
If so, you need and want WebAbility.
Accessibility is similar to SEO where there are certain aspects of it that need to be automated to make it manageable. I love the widget that I can place on my website so those with accessibility challenges can easily tweak their experience. I can't wait for the near future when the issues the scan discover can also be automatically fixed through the integration. Some of these issues I either don't have the time to fix or don't know how to.
Outside of potential lawsuits for legit businesses, this tool still easily pays for itself.