I agree with laotou, however... supposedly due to the recent tightening of copyright measures, illegitimate software and media have been systematically removed from the above-mentioned web sites. For example, in the past I was able to download the newest version of Photoshop, MS Office etc. from VeryCD which worked perfectly; nowadays, it's no longer possible. The same goes for Youku, when I tried to search for some Hollywood film there all I got were trailers.
Among the alternatives, I'd suggest that you download the official version of eMule (NOT the VeryCD version) and search away! Due to the many network issues peculiar to China, the download speed may leave much to be desired; then you can simply: Copy the ED2K link in eMule - Open up Thunder (迅雷) - Create new download, so that you'll be able to obtain downloads from both the BitTorrent network and the eMule network simultaneously... effectively doubling, or even tripling the incoming data flow.
The only concern with this may be the ethical issue, since Thunder has been labelled by the P2P community as a leech... Not that it concerns me much, though.
The same console shops should be where you can make an enquiry. Once the boss of the abovementioned shop asked me whether I grew tired of the PSP 3000, in which case he'd be willing to buy it back second-hand.
Or you may wanna try Ganji (the biggest web site for selling and buying of second-hand stuff, that I know of); beware though, the deals are completely 'tween individuals themselves and there's no guarantee of any sort by the site itself.