What is this engine worth?

Blueprint 408 Mopar engine with 5,000 miles on it.
Brand New it is $3,600 but comes with a 2.5yr/50,000 mile warranty

This is used and past the 2.5 years so I'm sure the warranty is void.

Here's the engine in question: http://www.blueprintengines.com/ind...ler-408-main/item/chrysler-408-base-bpc4082ct