It's not clear from the news articles whether any pictures were even sent, let alone paid for.
The police determining there's no crime doesn't tell us that either.
For all we know, the whole thing is a dead cat to distract from other, more serious (or genuine) scandals that might be going on. Or to keep them out of the news cycle altogether.
Even if the allegations are true, and he's paid a ridiculous sum for some illicit filth, he really only has to explain his behaviour to his wife and family.