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One particular store that caught my eyes is ifp3. But its not free from $15 per month. If you already got a web host, chances are it will be cheaper to ride on that existing bandwagon. But if you are paranoid about web stuff, play save with services from ifp3 and the like. Hey, they even promise you a nifty 5-minute setup with a limited time trial.
Go for it. Make your day. Own a storefront for your photos today.