Just sold my 2011 Tarmac SL2 with full DA7800, carbon wheels and spectacular White Industries hubs. Gave it away to the first person that waved $1,000 in front of my face. Listing was up for less than a day.
I’m thinking I could have probably held out for $1,400 but it would have taken longer and more of my time. OP’s subject bike is s-works which could add a bit to the value. Lots of other variables to consider on an 8 year old carbon bike.
Here’s a pic to compare condition to the one you are looking at