It varies from state to state. In some states if you sell even 1 car for a profit you need a dealers license. In other states you can sell up to 12. Click the link and find your state in the list.
two
you can sell up to 15 cars
The number differs from state to state. What state are you asking about?
The official answer is none, unless it is your own personal vehicle. See the FAQ section on the OMVIC website.
You can sell up to 4 without a dealers license.
6
6
3
5
5
You can sell 4 without a license.
That depends on what state.