For that price on ebay you are probably looking at different kits....bags,tripods,cards, etc.
The items sold in the kit packages aren't worth the extra money and you can get better items cheaper and get what you want.
Also to buy on ebay MAKE SURE you buy from authorized dealers if you want a manufacturer warranty. Their prices may be a bit higher but you'll get quality and service.
I bought from completephotohouse and got very good service and am sure the other authorized dealers give good service.