Ok, so adding in another $200 a month lost opportunity (say for 7 months. We're now at $2500... So I guess these details are adding up, still not $5k, but the case for a discount is definitely growing.
Interest rates increased by 4 basis points from Dec 2021 to Dec 2022.[1] So a 3% loan then would be a 7% loan now or a 5% loan then would be a 9% loan now. The starting rate would depend on your credit score or other factors.
1) A basis point is 0.01%. 2) We should count the rate increase from the contracted delivery date to actual delivery date, i.e. one month instead of 12 months.