Well, EBay does give excellent Deals on the widest range of goods. The newbies like Flipkart and Letsbuy are trying to do the often seen tactics of undercutting the prices, but believe me, certain items on these websites sell at prices which are lower than even the stockist prices and there is no way they are selling it without incurring losses. it is basically a bid to capture new markets.
However in the long term and the model of business of ebay, it is for sure that this website will continue to offer the best deals on the widest range of products.
Only advise would be that it will be better to stick with the larger sellers esp powersellers. i say thing inspite of the fact that once even i was small on ebay. but its important to have good first purchase experiences to get hooked on it for lifetime