1. First off it's an import from japan, And it's made in low numbers to fit the niche market it caters to.
2. Most of the after market body parts non replica come from Japan so that adds to the cost, And for the other engine mods again its a small market so prices are up.
You want to save $$? Hangout in the Classifieds and you'll eventually get a deal on all the parts you're looking for.
But I agree some parts are pricy.
Welcome to the IMPORT mod world.
