Good point, and alot of this was brought on in the foam(blanks) industry and the closure of Clark Foam. The saga continues, the fact is there is better (overrall) material over seas and as some of you mentioned, it certainly deals with what kind of board you want. The shaping part of it simply boils down to your preference, your ability and mainly what you plan on riding with that board.So there are plenty of elements in where the different revenues stand, why it is greater in certain areas and why it is not. Never discounting any shapers, but the material(quality of the foam) has alot to do with the finished product and the cost of an import/domestic.. This is a good reference in which you can find some general info and numbers at times dealing with this..
http://sima.com/
Better material( foam/blanks), higher demand from the consumer due to performance, durability, etc, higher demand from the shaper( in which the local surf shop down the road shaper is suffering b/c of $$$$, unlike the larger company shapers), which as an import, no need to tell you the prices tagged on to that. Much like our oil problem and my 500 dollar gas bill a month.
I think the real challenge is if you are a descent surfer and you can figure out what exact board you need in the given conditions, learning the fin system is a whole different concept. Just ask Slater coming off of runner up at Quik Pro in France. He said it made all the difference heading into the final day of competition. Last trip to the lighthouse under solid conditions, I saw a guy switch out some FCS and it was basically night and day in his performance from what he previously had under that board.