With the recent changes to the used Tesla buying experience, most people's experiences here will be different, and not really useful for comparison with the current buying process.
I bought my car from Tesla a little over a year ago, and I could see pictures of the car and discuss features with the sales advisor. The latter might still be possible, but the former is not. Since these aren't CPO cars that have been refurbished, and there is no guarantee about the extent of cosmetic blemishes, it's definitely a roll of the dice these days. You're really just banking on the one year warranty increasing the value of the car over buying a car elsewhere.
In my case that warranty has been valuable as I had a few things taken care of that would have set me back a few $k, but others have had no issues and the warranty is not worth much.