Hard to base a value, since not too many used ones are on the market. That is a 45k hit in only a few months of ownership. I would have to think that is a smoking deal.
I am considering a used (3500 miles) 2013 GTS on ebay at a dealer with 100% feedback. He wants around $95K. The MSRP was $139,500. It has a clean carfax,no track, no paint or body work. Does this seem like a good price for a 2013?