Bike Bluebook says it's worth right at the $1300 others have mentioned. I rated it at Very Good condition because I doubt it's excellent. Even if it is excellent that only adds about $50 extra $$ to the value..
Edit to add for your warranty Q.. Trek warranty only applies to the original owner and it's not transferrable..
I'd offer $1300-1400 max for it and if the seller wants more, walk..
https://www.bicyclebluebook.com/valu...oduct/3168161/