A way to make money on ebay by copying others is to buy in bulk (wholesale) and then list the products yourself.
I will admit though, that it will take some effort on your part to find that product that will net you 30-50% profit. A list of suppliers would be helpful to get product ideas.
I found a great list, but it is too large for me to sit down and go through the tedious task of finding profitable products! If you have the time to check each supplier, then check ebay to see what the products that the supplier sells are going for then you need this list!
Get it here: http://whole-sale-list.com. It`s only $10, well worth it if you can find some products to sell.