You've already gotten a ton of great advice... but my thought it always "If the deal sounds too good to be true, it usually is."
Most popular/up-to-date camera equipment retains it's value pretty well, so you should check out the 'deal' you are getting very carefully. While I've never been scammed (knock on wood), there seems to be this scam going where the dealer strips down what is in the box and then, after you place your order, they call you, and 'sell' you all the upgrades... like the battery. And then the charger. Well, you need a manual too. Oh and don't forget the neck strap. How about this lens. You definitely need the 'insurance'.
From my understanding they are very high pressure and if you decline anything, they cancel your order and you never get anything.
B&H is my favorite place to buy equipment.
Check out resellerratings.com as there is a lot of good info there.