However, it is a TLPO vaccine which teaches your immune system one of the tricks cancer uses to evade being taken care of by your white blood cells. So it's application could be huge.
That said, as you might have noticed, it has to be personalized for the patient as it targets the specific way your cancer is hiding itself. Personalized medicine is still very expensive, but quickly being able to ID the specific sequence of DNA that gave your cancer it's hiding ability could be something that computers help us with one day.
So if this does get approved, it will likely be incredibly expensive per patient.