If you are looking at ebay, I would suggest that their 500 MOQ may give you a sniff, although you would have to settle for a minor mark-up.
Understand that there is a very high probability that these sources that you are looking at are most likely already selling on ebay under different names, in fact they would be crazy if they weren't.
Unless you are buying in distribution numbers straight from the factory, then who ever you purchase from will most likely be in a position to not only compete against you on ebay, but will be able to undercut you.
I know that everyone wants to sell the hottest moving products on ebay, but the fact is not not everyone has a chance. It may not seem like it, but It's big business, and that means that the people playing in that game are very well resourced.