I think that if you are buying items that have "shipping special", there is no discount on those items. If the shipping is quoted $5 (special) on each item, you'll pay $5 for each item.
I've bought seven or eight items and was charged a lower price for shipping than each item individually.
NewEgg is definitely playing a little 'hidden cost' game with their prices, but to a much lesser extent than others. I think that companies have little choice, because the one who gets the most traffic and interest is the one who advertises the low-ball prices. That's why I always ignore the first 5 resellers I get on PriceWatch, because you KNOW those companies are the worse low-ballers.