Apparently when you request an estimate for your trade-in, it's saved to your profile and applied to your order. I recently traded in my Model 3 performance for the new Model S AWD. It took them about 2 weeks to reply with a trade-in estimate. I texted Tesla about the unusual delay, as most folks receive an estimate in 48 hours. They claimed they were running behind on trade in estimates as it was a busy time i.e., end of the quarter. Then I received an 'email' from a Tesla rep saying my photos were not accepted since I took them in my garage (wasn't driving the vehicle) and didn't show the full, unobstructed images requested (Front, Rear, LHS, RHS, and interior seating). Photos also need to be taken outside on a "sunny" day (not many of these since it typically rains every day in early spring). Once I resubmitted the photos via email (not in the app) I received my firm estimate 2 days later. Also please note that once you formally "ACCEPT" your trade in offer, you're not locked in. You can still reject the offer if you get a better deal elsewhere. Even if the offer expires in 30 days, they will likely extend the offer if the mileage is within 1000 miles when originally submitted. The only issue would be, since Tesla cut prices across the board on April 7, this may negatively affect the trade in allowance. I had a competing offer from Carvana which was actually $2K higher than Tesla's offer. I turned it down for three reasons: 1- you only pay sales tax on the difference between the trade in and the new vehicle 2- Carvana later disclosed that a "pickup fee" would apply in my case $1500. 3- If you sell privately you need to turn in your plates to your local DMV (as opposed to transferring plates) to remove the vehicle from your policy. NYS DMV gets an extra $210 fee to register new plates as opposed to a $60 fee for registration transfers. The key take away here is to consider all aspects of trade in offers before you commit. I accepted Tesla's "lower offer" and for me it was the better choice. Hope this helps!