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For new in box items like this, you will find most authorized retailers have the same price, or very close to each other. Some may offer to throw in 'extras' - some of which are useful like SD cards and camera bags.
Are you located within the U.S.?
I always suggest supporting your local camera store (if you have one) first. If not, look to the big name online retailers who also have brick & mortar store fronts - Adorama, B&H Photo, Roberts to name a few.