It's always a good idea to check out the wholesale category on ebay when looking for products. You never really know what is going to turn up at any given time. You may find someone using ebay to just unload stock purchased from somewhere else, but you can also find ebay sellers offering wholesale deals on products they are already selling on ebay themselves, at a much reduced price due to the volume purchase.
Now always bare in mind that there's a reason why someone is selling off wholesale, could be that they need cash flow, could be tat they have a slow moving item that they are looking to clear.
That said, the wholesale listings can turn up some very interesting opportunities at times, whether you want to resell on ebay or through other channels.