Ask HN: Should I build this web app (available domains)?

I'm interested in whether people would use a web app that gave available website domain suggestions from real people for a fee. I'd like to gather feedback as to whether this is useful before actually building it. It would work by specifying what your website/business/startup/webapp is in a short description and listing some keywords or domains you like, as well as what domain extensions you will accept. You then receive only available domain suggestions from people. The idea is that coming up with a website name is difficult for many people, primarily because the domain is not available for every good name you think of. For this service you would pay a small fee and receive a list of domains, all of which are available, so you just have to choose which you like the best. Would you use this? What would it be worth to you if you could get 100 or 200 available domain suggestions? Do you have any other feedback? Thanks very much for any input or advice.