No one really knows for certain. Used car values in general are insane. In the Tesla groups I'm in, many are choosing to sell their cars immediately after receiving them for 10 to sometimes 50 thousand over MSRP. I sold my 2.5 year old, 25k mile base Model 3 for 8k more than what I paid, to a dealership who went and sold it to auction. I could've gotten maybe 12k more than what I originally paid for it had I sold it private party.