Premise: The Alfa Romeo Brera and the Alfa Romeo Spider (Type 939) are two sports cars manufactured by Alfa Romeo respectively between 2005-2010 and 2006-2010. The Brera is a 2+2 coupé, while the Spider is its roadster version. Both models were built by Pininfarina.
Hypothesis: The Alfa Romeo Spider is more expensive than the Alfa Romeo Brera