The $35,000 Standard Range Model 3 was briefly available on Tesla’s website from February 25th , 2019 to April 11th, 2019. As of April 12th, 2019 Tesla has decided to remove the Standard Range option form their website. The stated reason was, “we have made the decision to simplify our production operations to better optimize cost, minimize complexity and streamline operations.”

Standard Range is still available as a software-limited version of the Standard Range Plus to those customers that either call Tesla or visit one of their stores.

Tesla has not stated how much the software-limited Standard Range Plus version will cost.

https://www.tesla.com/blog/update-our-vehicle-lineup