Depends the costs. If you sell it cheap and with a good delivery price you could have a nice return. At beginning it will a bit hard, as you need to gain trust from buyers, people usully don't buy stuff online from unknown sites. And you must know, even selling stuff for Bitcoins, there are big sites selling cheap stuff with a very good organization system, like AliExpress...
But, aliexpress or Alibaba takes much time to deliver the product and no refunds as per my info .
Yes, they take a good time to deliver, if you can do it faster and with the same price or similar, it's an advantage yours.
They have refund system and I must say it works very well, they use a site called "Ebanks" to refund buyers. Sellers don't receive the money until the buyer gives a positive feedback saying that everything is ok with the product.