I have a lot more to say. Too bad I can not tpye that much in Chinese. My two cents:
1) Great Ad.
2) Regarding Ebay: Know what you sell, sell what you know. Do lots of marketing research on Ebay. Don't sell for less if your items are hot. Charge as much as you can. Run away when there are too much sellers selling the same thing. Find another new market. The customer is alway right. Never ever give feedback first.
3) Regarding Alibaba: Take the chance. Place a small order first. Do some rearch about your trading partner. Use the Mao-Yi-Tong, and telelphone.