Where's the irony in the last statment made to Hester by her brother in "The Rockin-Horse Winner"? "my god hester you're eighty-odd thousand to the...

The irony of the statement is that the uncle implies Paul is better off dead. The uncle realized Paul was mad and believes that the boy has been released from his agony. This reinforces the theme of the story about the destructive power of materialism. His mother may now have a lot of money, but Paul is in a better place where he can ride his rocking horse forever and not have to worry about his mother's incessant need for money.