Getting the money usualy isn't a problem, its what the money wants from you.

You should do some research and start writting a very detailed business plan. Then go to investors or banks. I will WAG with the cost of things today starting a high end shop from scratch would cost $500k-$1M. Certainly that amount is doable if you present a good business plan that will pay to the right people. I'd also get a lawyer because you would need to figure out what type of ownership to use. IE if you own it as an S or LLC your liability should it go under will be limited, ie they can't take your house.

Maybe purchase an already existing business?

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