i'd be wary of these package deals on ebay. they cram a bunch of mediocre accessories in that you may not really need and are relatively low quality in order to increase the price. also, alot of these sketchy merchants on ebay sell gray market gear that may have trouble being warranted through canon. further, they often break stuff out of its package and sell you refurbished gear without telling you. investigate the seller before puchasing anything like this.
i have never used the S2 IS, but it gets excellent reviews, and for its price point supposedly has excellent image quality and the lens is supposed to be a substantial step above regular P&S cameras. bear in mind, that they are not actually selling you wide-angle or telephoto lenses. they are adapters that screw onto the outside of the lens and change the perspective of the lens. at least this is my understanding.