Spot on, here. There are just too many variables to tease out what individual options are worth. The big ones are obviously model year (more on that below), battery size (i.e. range), dual or single motor, performance or non-performance, and mileage, but to a much lesser extent than ICE vehicles. After those, any other option may or may not add value to the price of a car.
Tesla doesn't operate on a "Model Year" like all other car makers. Tesla rolls out new options, removes old ones, or changes others on a "as ready" basis, without regard to the model year. There are dozens examples of this for big changes throughout the years -- AP1, AP2, Model S Facelift, MCU1 vs. MCU2, etc. And it's not even by VIN order, since the cars are not manufactured in VIN order, so you can't say there's a VIN cutoff of most of these.. it's more like "If it was made by late March of 2017, it probably has this new feature" at which point someone will chime in and say their car made in May of 2017 doesn't have that feature. The only way to really tell is by physical inspection of a car, or getting the option code list to see what was included when the car was made, and even then, the option code lists aren't always accurate or include the necessary information. For instance, there's no option code to tell MCU1 cars from MCU2.
The bottom line is there's an entirely new paradigm here on how to buy a used car and you have to basically forget everything you've learned in the past. It takes a lot of time and research to understand what you want and how to find it. But we're here to help you. Good luck!
