Yes, Mattel does not apply a clear coating on their models. But Minichamps does. And I do not know why certain website offers sale of Formula 1 where the price of Minichamps are equivalent to Hotwheels.
In my country, the price of a Minichamp F1 is equivalent to 3 units of Hotwheels F1. And I can see that in Singapore there were driver discrimination as the price for Raikkonen is slightly higher than Coulthard, the same apply to Barrichello and Schumacher. In Malaysia, they were all the same price tag for all drivers.