PC show usually showcases the latest items as well as to bring in some old items to add on to their line of product or even clear their stocks.
In fact Asian market exhibition are usually crap. In Japan as well as western countries, the latest models that are featured in a exhibition usually comes with goodies and are much more cheaper during the launched period. This is especially true to IT products because when these newer models are launched, the new buyers are usually white mices who use and feedback fault first. That is why you see new firmwares, recalls etc becoming very often especially the newer digital bodies nowadays.
If you are expecting the latest model to have a cheaper price, I think you will be disappointed. If you are a seasoned photographer, you would know by now, where to get these individual photographic equipment and hence get them at reasonable price with good after sale support too.
For hobbyist, if you don't really need to start right away, I suggest you start saving up to get the best that your budget can stretch. During this period, you should read up lots of info on photography and once you start shooting, you will know all the hardwork pays.