I second achicks, the engines are both from the same manufacturer but the difference in price reflects the difference in warranty and support. All this seconds are for the china market is crap. The dle,s hobbyking were not seconds and im sure the jc brand they sell are not seconds, just dont expect your local dealer to carryout warranty work for free on a engine that has made him no money, quite rightly so. Thats the difference right there.