If you're selling anything, it's much too early.
4 seconds sound clip from the X Minus 1 - Mars is Heaven by Ray Bradbury classic radio dramaseries.
You can hear this line at 00:12:30 in the radio play.
Quote context
[...]
- Stand back. Give me a clear shot.
- You sure a bullet can stop a Martian?
- If you're selling anything, it's much too early.
- No, no wait just a minute. What town is this?
- What do you mean, are you census takers?
- No, no, we're strangers here. We want to know how this town got here.
- From where? Do you mean out of the ground?
[...]