How much does Zelle charge to send $1000?

Excuse me, could you please clarify for me the fees associated with sending a $1000 transaction through Zelle? I'm interested in understanding the exact cost I would incur for such a transfer, as I'm considering using this service for a specific financial transaction. Is there a flat fee, a percentage-based charge, or perhaps a combination of both? Additionally, are there any hidden costs or conditions that I should be aware of before proceeding with a $1000 transfer through Zelle? Your clarification on these points would be greatly appreciated.