Signaling that you are a man that can provide for a family

When you sign up on the app as a new user that's exactly it.

Someone else posted something about the price being different based on your user profile/purchase history, so maybe having three logins, they can't build up a proper profile.

Or they have a "limit 10 per customer" thing?

Edit: Guy above me posted that it was a sign-up-and-get-free-nuggets kinda thing...