some good resources here
http://photography-on-the.net/forum/
check the "market watch" forum
i recently took the plunge and got my d400 + kit lense + sigma 10-20mm + 2gb memory
not sure if there is a similar site for you guys but over here there is
http://www.camerapricebuster.co.uk/prod192.html
i bought mine for £493.50 and im seeing the price drop each day on that site!
from what ive read the kit lense is a good one to have bearing in mind the price difference of the body only - plus should you come to re-sale - a kit will always look better kinda thing
take the plunge and you wont regret it :D