Where to Buy?

Please write here your good experience here to know where to buy..

Also how about ebay companies? How much do they honest?

I bought my d80 from completephotohouse on ebay and was very pleased with them. There are quality and non quality companies there. If you are in North America, make sure the seller is an authorized dealer and that you will get manufacturer warranty. If you are buying new, that is.
If you read the some of the previous posts you'll see who to definitly not buy from.
Most recommend B&H or Adorama.

cameta
panwebi
audio/video express
the imaging world
complete photo
cord

Those are ebay companies I checked for being authorized dealers in August. Some of the names have been shortened but you should be able to figure it out.