Not polite? Money is money. Everyone has to balance making their money go far enough to get what they want. To me this is a silly question. If someone is specialized, doesn't that mean you can't find it commonly anywhere else? If you find it cheaper on Amazon or somewhere else and it's the same, well I'm going to make my money go as far as possible. Keep in mind that you should take into account shipping cost, and how fast you need something. Competition is the check and balances of capitalism. You either compete of price, service, speed, or niche. If you're not competitive in one or more of these areas you shouldn't survive.
