No, that’s not a typo
This cliché should be used only when the preceding sentence contains no typo.
He spent $500 on the ticket. No, that’s not a typo. (Update: That should be $50.) | He spent $50 on the ticket. No, that’s not a typo. |
The spoken equivalent “You heard that right” should never be used, since the audience is made responsible for the communication.
— It was a show of lightning and thunder. You heard that right.
— What does a show of lighting and wonder have to do with our discussion of beauty in nature?