I guess I can see that. On the Solo, we have less than 200 lbs. of composite, which costs us about $700 - but this doesn't count control systems, landing gear, brakes, etc. Labor to build those parts and put them together is about a third of overall labor, so 150 hours or $2700. Together, that comes to less than 20% of overall cost of manufacture. I've always been intrigued with flying wings, but how do you make one a UL? Seems like you'd end up with the Sadler or the KasperWing? I don't particularly like how the Verhees folds and travels (I would like trailer storage) but there is probably no better way. 254 pounds is going to be the tough part, and again, designing a flying wing is beyond what I am willing to do.