Hello bradford,
Thank you for posting Microsoft Community.
Yes, Microsoft has a trade-in program for Surface devices. You can visit this link Microsoft Trade In & Recycling Program - Microsoft Store to check the trade-in value of your Surface Pro and see if it is eligible for trade-in.
If it is eligible, you can then follow the instructions to complete the trade-in process. Please note that the trade-in value may vary depending on the condition of your device.
I hope this answers your query.
Kind regards,
Lavenia