The true actual purchase cost of a Tesla (Model S 70D)
February 12, 2017
; Date:Tags: Electric Vehicle Economics »»»» True Cost of Ownership »»»» Tesla Model S

The first trick to decreasing the cost is to buy via Tesla's pre-owned car listings. The company has a stock of used cars which such as when an owner trades in their car for a newer model. These cars are checked by Tesla's service department, they come with a limited four-year warranty, and a lower price tag than a new car.
You can search here:
https://www.teslainventory.com/
Or here:
https://www.tesla.com/preowned
The cars are either CPO (Certified Pre-Owned) or Inventory models, the latter being loaner vehicles that Tesla Motors made available to customers whose car was in the shop.
List price for the car he bought - $90,777. Because it was an Inventory car, Tesla gave a $4,500 discount. Add in other discounts like the $7,500 federal tax credit, and total discount of $13,000, and a final price of $77,777.
About a year after purchase he asked Tesla Motors for the trade-in value. Tesla told him $52,000 or a $25,000 depreciation, working out to $1/mile driven.
Cost per month - $1462 that's including loan payments. Otherwise $161/month cost.
Source:
Teslavangelist