We all know Used Honda Engines are in demand, market price of these engines go up every six months as the demand goes up. We have been tracking prices of some of the key engines. For example if you look at 1988-1995 Honda Civic engines & Honda CRX engines, D15B, ZC SOHC or D15B V.T.E.C replacement for USDM D16Z6 prices have almost doubled in last five years.
D15B/ ZC Sohc was selling for around $450-500 five years back and these days because of shortage and increased demand they are being sold for around $800-850 in 2012. The reason being US salvage yards don't even have a scrap i.e a core motor for this because they are have totally disappeared ! The only option left is to import from Japan but the limitation is that there are very few importers in this country as JDM Honda Engines are not easy to get, especially the famous ones because Japan exports engines to all over the world.
Used Honda Motors from Japan is one and only best bet and the only option for any Honda owner because they are the only feasible option due to their quality, as Japanese culture of driving only on weekends is conducive towards availability of Used vehicles in perfect condition to be sold or exported as a complete used car or can be dismantled for parts. Average mileage on these Honda Motors is around 40-50K which is almost nothing because if taken care of, Honda motors can run up to 500,000 miles.