How much is this PC worth to sell?

My sister wants to sell my old desktop i gave her to get a laptop for school. I'm not good with pricing but I can provide all the details that I remember.

It's a Dell Inspiron 3268 I believe, approximately 6-7 years old which I used until 2022. Intel Graphics 630 8gb RAM Intel i5 Roughly 1TB storage

What would be a fair price for her to sell this? If more details are needed I can try to answer or ask her but this is all I can remember off the top of my head. Thank you!