do i include the power supply with a macbook pro trade in?

No. You do not need to include accessories like chargers or cables.

See the FAQ section at ➡️ Apple Trade In - Apple

Do I have to include accessories like chargers and cables?

No, you do not need to include accessories. If you choose to include any, we will recycle them for you.

Hi,

Yes, I think so.

You're welcome. Glad I could help.