We took delivery on our Model 3 on January 3. At the time, we were told full self driving would be $3,000 at purchase, or $4,000 after delivery. I know new orders are $3,000 now/$5,000 later, as I just watched a friend configure a couple of days ago. (Had my choices been $3K vs. $5K, I would have bought it then for $3K.) Today I logged in to the "My Tesla" section of their site, and found the upgrade option (which wasn't there a couple of days ago) - but it is trying to charge me $5,000, not $4,000. They should honor the $4K price for people who were told it would be $4K. Does anyone know how to get the upgrade for $4K, as promised? Has anyone talked with Tesla about this yet?