I just went around shopping for my first dslr a while back. What I found was that you really need to know what you are looking for and stick to what you are looking for. Many shops tend to try to push other items or brands to you. Like for instance, while I was shopping for a d90, one shop tried to sell me sony, another tried to push me towards canon. So even if you are tempted by the whatever that the salesman push to you, do not commit. Go home do your research again if you are tempted. IMHO, it pays to hunt around for pricing, go home do a bit of research and think it through.
For lens, sometimes a shop can quote you a lower price than another shop, but there might be some other catch, like for instance one sells you a copy that is sharper than the other, or one has a longer warranty, etc. Personally, I think newbie should always just buy the kit lens and only the kit lens for their first shopping trip. This is because not every copy of the same lens model is the same due to tolerance and stuff. Moreover, you probably still don't have much clue about the range you like to shoot at or whether if you can live with primes, unless you have some film slr experience. I mean you are already in a state of confusion about all the different function of the new body, how will you be able to even properly test a few lenses. Anyway, shops rarely give extra discount even if you buy everything at one go.
Do note the weight of the camera too. A small difference of 200-300g can and will feel very different. When I first tried the "semi-pro" bodies after the d90, my hand shake became more obvious due to the different weight balance despite just a slight weight increase. After a while I love it. Different people have different palm size, so what works for me might not work for you.
I didn't buy on my first shopping trip for a camera and I am glad, because it gave me time to really look around and think about what I really want and need. The body and lens that I ended up with were totally different from what I had planned for on the first day. Reading online and seeing in real-life can be very different.