Flea market prices are often ridiculous because the parts aren't prices to sell, they are valued that only the person who truly needs the part will pay it's price.
Dan Gurney proposed that America has little following of auto racing becuase it has so many varieties and classes of high money racing.
He proposed a single big league of racing, like the Europeans have, and explained that the following of racing is so incredible in Europe, that the pinnacle is held in a country that has no stake in the race. The Nurburgring F1 racing is held in Germany, a country that makes no engines, enters no cars, and has no drivers participating, yet has a 1/4 million people show up the the race to spectate. Same for Monte Carlo.