Excellent point. The fact that a .25 costs more than a .15 and a .40 costs more than a .25 is totally artificial and solely due to marketing strategies. Studies have proven, too, that many consumers sense they are being cheated if smaller products don't cost less, or visa versa, even though they cost almost the same to manufacture. It has become a psychologically ingrained characteristic of our buying habits. Stepped pricing is even worse with things like ESCs where a 25 amp example costs more than the 15 amp model. As eniac stated, just be cause it's an .074 doesn't mean it's not worth the cost of a quality .46. It is use value and quality, not artificial price stepping and marketing strategies that really matter when it comes to things like our engines.