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I have only seen discounts on inventory models with some miles. Right now, it appears demand is far exceeding supply, there is no need to offer discounts. In fact, Tesla raised prices on the SR+ and LR about a week ago.
I am getting $1050 off on a 2020 AWD with 235 miles on the odo that is at the Tesla in Plano. I have to go get it from Houston, but that's not a big deal. The discount is $4.47/ mile, which is a lot more than what other people have mentioned for Tesla's mileage algorithm. So that seems like an incentive.