Non-defective returns are subject to a restocking fee, spelled out in the terms of sale you agreed to with your purchase.

https://www.dell.com/en-us/lp/return-policy

personal use laptops have restocking fees? 

@ejn63​ Why would you charge restocking fee for personal laptop?

Thank you for contacting Dell. We have sent you a private message. Please share the order details via private message so that we can review the information.

This is a user to user forum.  ejn63 is not Dell, but a volunteer that answers in Dell Community like I do.