To answer the question on the value of "win car".
there is only 1 way, either you decrease or increase your garage value.
those cars that were upgraded, their value is not valid, as their value is over all upgrade.
i have found some value, i will try to make a list. Not that difficult.
Pagani Huara is 1,500,000
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take this sentence as value 1 and value 2
search 1500000 and follow the method, the only difference is that, there is no gold value, it is also 1500000.
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take this sentence as value 3
look for the "1" above value 1 and value 2
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take this sentence as value 4 and value 5
look for the 2 row of "0" directly above value 3
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edit both value 4 and value 5 to "1"
there you go. 0 star rare import cars