Sold Porsche GT1 for $7.8K: Now Worth Millions! HUGE Regret! #shorts: Raul Marchisio deeply regrets selling his Porsche GT1 for just 7,800 euros back in 2008. Its value has skyrocketed since then, proving it was a painful financial decision. #PorscheGT1 #CarRegret #InvestmentMistake #ClassicCars…