Another issue with legacies, is for the most part, Tesla, as a manufacturer, ”owns“ the vehicle until you pay for it. Therefore, if they need to discount something, they can do it on the fly, and call it a day even if the inventory car that has an MSRP of $99k on that sticker, now actually has an MSRP of $79k.
Dealers, pretty much own their inventory. So, after the dealer buys that car from the OEM, unless the OEM offers any rebates, assistance programs etc,, any discounts are pretty much on the dealer to eat.