Yea, from what has been posted in the many pages of this thread, yours is probably the lowest offer which isn’t making any sense at all.I thought I did something wrong too but..
I would double check to make sure you did put in the correct VIN and any other info. Clear all cookies and caches from your browser too before doing another evaluation.
Do as suggested and try getting other evaluations from the other sites and see if the estimate to buy comes back as low. If it does, then something is definitely not right with your CarFax Report. At that point, try running another VIN report from another VIN reporting agency and see if it has anything different from the CF report.