www.dlusa.net is $700 shipped and he supports and services with a warranty. Only know people running DL50's, they have been very happy. Checked other sources (since I'm in the market for the same engine, just no point until I have the airframe) and no major complaints in the 6 months they've been out. Don't know if DLUSA has them in stock right now you'll have to check. With the lack of complaints I say try it. MadDog Joe.