I always spend 2-3 days researching online before I purchase most cameras, and I am glad that I do. I spent several days looking in stores, researched online, visited with friends who are "into" cameras, and, although I could have saved $75 buying online, I purchased in a local store because the salesman was generally knowledgeable and deserved some "credit" for the sale. I want local stores to remain available!
I love my camera, the Sony DSC-H5. I took unbelievable pictures on my trip to Italy, especially because of the high-speed shutter setting. I am sure I took over 3000 pictures, and only about 10 are blurry, even those taken on the high-speed train!
I try to purchase at least half of my computer/electronic purchases in local stores to make sure they don't close up shop. We need them, too, and sometimes just that dollar bottom line is not as important as local availability.