The more bikes are built the cheaper they become to produce and sell. If you spend say $10000 developing a bike and build just 2, they will cost around $5500 each. but if you build 10000, they development cost is spread over the bikes and they become much cheaper.
ok look. $13.000 isn't that much really going off even a round exchange rate it's only about £7000 pounds sterling and look at it! i mean in my opinion taking into account the engineering that must go into each of these bikes that price tag is an absolute bargain.