There are some successful traders who manage to buy low from Alibaba and sell high in Ebay.
However, that does not always work.
For one thing, you need to know the real manufacturers and not just go through the traders in Alibaba.
Some sellers in Alibaba are just middlemen. They are not the real product makers.
They have a high minimum order, and they can make a quick profit off you.
If you want to buy low from Alibaba, you have to make sure that you contact the manufacturers direct.
You can get a few samples before you place order for 500 or 1000 pieces. You still need to have a good working capital, because it takes time for you to sell in Ebay and recoup your money.