In most jets there are more expensive materials used such as CF and Kevlar..Also, the volume of sales is in the few hundreds vs, lets say, Great planes that sells thousands of their ARF prop models. Hence the price is less (they also have the buying power unlike jet mfg'ers). If you look at some of the IMAC planes, they are almost the same price as a good jet ARF. Again, supply and demand and lower volume keeps the price up of these "specialty" planes....