This is fairly basic accounting...let me try and explain, MSRP as you know,is not a final price of anything...key word..S in MSRP...the price is merely a SUGGESTION. Now, for accounting purposes, LUCID is NOT reducing the MSRP of the car...it is providing you a CREDIT....in our linear minds ...that CREDIT should reduce the MSRP of the car...and anyone would think that...however, the sales tax is NOT actually charged upon the MSRP...it is charged upon the MARKET VALUE of the car itself...market value and MSRP are NOT the same thing ahd tne nuance here though is that for a BRAND new car...the two are VERY close to where the difference is usually zero dollars...so, you are NOT paying sales tax on the MSRP actually...but on the VALUE of the car as it stands in year 2023. Now, how do we know what the value of the car is? The states (And the bank) look at the best representation available of VALUE...which for a new car is usually its MSRP...this is why you pay the tax you do. This is accounting 101 and the key here is recognizing what credit means...a credit reduces your liability of a depreciating asset (A Car).. but does not reduce its MSRP... (My finance professor would be proud)