Real value (Technically speaking), I want to be generous, $35.000.
Here's the difference. It cost Ferrari $356.000 to build each Enzo, and it was sold at $650.000 (Good investment, by the way). There's at least 10 times more value in an Enzo. It's all technical value, which makes it a purebread.
The GT40 is an ancient engine, with ancient technology, and no added value. What the heck, Ford was doing so poorly in F1, with Jaguar, that the pulled out. F1 is the reflection of how good a carmaker can be. Toyota has amazing budgets, yet Renault is faster, and more reliable. Mitsubishi pulls out of rallies for a year, and they cannot catch up anymore. Makers like Ford a way behind. The good times of the original GT40 beating Ferrari are loooonnnggg gone.