Dell XPS 15 Laptop Core i7 16 GB RAM

I purchased this laptop brand new in 2019 for $1,700. Now I don’t use it much anymore so I am looking to sell it. It is a 15.6” screen and touchscreen. It comes with the charger, a new one I bought just a few months ago. The only issue is that the battery life is not as it once was; it only lasts probably 6-8 hours with a full charge.