Trans ID and WIW?

I have an auto trans 8 speed and converter out of a 2017 scat pack challenger. No shifter.

I need to know what the numeric? Name is so I can list it for sale. Also what would be a good price for it?

I kinda need the cash quick so im looking for a priced to move number not a sit on it and wait type number?

I was thinking 1,000.00

Am I in the ball park?

Thank you for your time and advice.