Currently Tesla has three options for the Model 3, Mid Range Battery (260 miles), Long Range Battery (310 miles) and Performance Long Range (310 miles).
Mid Range starts at $44,000
Long Range starts at $51,000
Performance Long Range starts at $62,000
All pricing is as of January 2nd, 2019 and are subject to change at anytime. For up to date pricing and to start your design visit https://3.tesla.com/model3/design