Bustaname.com is free, and if you know how to use it, it does the same thing. Namestation.com charges $10/mo and has 18 name generators. All of which are very powerful.
I like that you're trying to monetize, and maybe you have the traffic to get a nice bit of side income, but I don't see how the service stands apart from the competition.
This tool is much better at generating professional company names than the other services out there. For example, Bustaname asks you to type in a list of words and then it will test the availability of all those word combinations. You have to be creative in order to benefit from it and even if you are, you might miss out on a lot of good domain names because you don't think of them.
I hand-picked over 4,000 business names that are used throughout multiple industries in order to generate the list that this business name generator uses to help you come up with a business name for your industry. If you want to name an actual business, no other tool comes close to being this good (imho). You're paying for the quality of the results and the speed compared to other methods of coming up with company names.
Most entrepreneurs start multiple businesses, so they may likely pay large sums of money for your service in the future if they were given a chance to try it once for free.