This site is similar in many ways to Liquidation.com. You will find that the sizes of the lots here can be massive. They can be as small as one item and by massive I mean that you should think in terms of tons.
How about a boat from the navy. If you did not want to recondition it for personal or private use you could pick it apart for scrap. The profit margin on such a deal could be huge.
The quality of the surplus here can be shelf perfect or looking as if it has been left for dead on a battle field. The good part about this is that they will provide pictures and video footage of many of the lots so you won’t be surprised by what you receive. You can click below and register there for free. Look around and see of anything fits the type of online store that you are running. I have found great deals on video equipment and military clothing. Anything that you can think of they most likely have or will have up for auction. I would suggest that you study the auctions and get the feel for how bidding goes before you jump in. Also there is the issue of shipping. It seemed complex at first, but it comes down to this. You can either pick up your item from the location where it is stored or you can arrange shipping with one of the shipping companies that they will provide you a list of. It is not that expensive, just call ahead to get a quote on basic shipping cost from said location.
That is the basics about buying your online store supplies from Government Liquidation.com. I will include a video and I suggest you go there to check out what they have to offer.