Sure, someone is capable of lying for money. But how much money would you have to be paid to subject yourself to the scorn which will come from accusing a powerful former acquaintance of sexual misconduct? Christine Blasey Ford got death threats. She had to sell her house. And her reputation is forever linked with the worst moment of her life. When she dies, her obituary isnt going to lead with her family life or professional work, but about what someone else did to her when she was a teenager. You would need an awful lot of money to subject yourself to that.
And conservatives act like this is a one way street, like the accusers are the only ones with motive to lie. But we know, for a fact, that Kavanaugh had motive to lie, whether he did so or not. He was looking at a lifetime appointment to the Supreme Court, the pinnacle of his profession. That's a powerful reason to lie.