Any nut, bolt or other small component will cost a factory perhaps 1/50th of what it will cost you to get one at the hard ware store.It would be interesting to know but there is no way they could build a complete sled for 1K-1.5K. I would have to say the materials alone might equal your amount defiantly surpass it by the time the material is processed. They use a fair amount of vendor parts (they don't manufacture) per sled as well, the track alone wholesale (polaris' price from vendor) probably half the cost we buy them for would contribute to $400-500 bucks alone that's just one part. Labor, overhead and R&D alone would surpass 1K-1.5K in a hurry. I heard a new car is sold for around twice the amount they cost to build. So I'd have to guess a 15K dollar sled would most likely cost minimum 6-7K to build plus the dealer cut and transportation.
I know that Volvo payed about $250 for the entire 2.5L 5cyl inline petrol engine they used for many years in their 850, 50&70 series cars. Saab payed about ONE dollar for a front shock absorber for the 9-3 car. I know, these are old numbers but they are/were small makers with series sizes roughly comparable to what Polaris might have and will give a hint to the price bracket OEM:s shops in.
As I said, parts only, no assembly or R&D/development a sled will cost 1-1.5k, add those and you might get to 2-3k. A car will have an even larger gap between total cost and parts only. Big auto OEM:s probably has a parts bill for a four door family car of perhaps 3k. But in that case the bill for R&D/development and other "system costs" are much, much higher so yes, by the time all those are payed for you could be in the right area guessing they sell it to the dealers for twice total cost.
What all OEMs have learned is that a dollar earned isn't near that by the time it has been taxed and arrives at the bank. A dollar saved is a whole dollar in the bank. Selling to OEM:s is a tough business.