Examples:

• And we can get in on the ground floor.
• You have the chance to get in on the ground floor of something.
• Give him a chance to get in on the ground floor.
• You can get in on the ground floor.
• You have the chance to get in on the ground floor of something.
• An opportunity for a guy like me to get in on the ground floor.
• This is your chance to get in on the ground floor of something truly special.
• Get in on the ground floor.
• I mean, you can still get in on the ground floor, you know, get rich.
• Buddy boy, you have the chance To get in on the ground floor of a thrilling opportunity.