Not necessarily the case. There are lit fees of course, and filing fees, discovery, etc. But once you get to the SCOTUS stage, assuming you're not retaining Gibson Dunn or Covington or someone's supreme court practice, there are many clinics with some star power that will do the case for free. Many top law schools have Supreme Court clinic and we sought out cases that we could bring to SCOTUS. We would have died to help take this case to SCOTUS, for example, completely free.