Expandly help us sell large quantities of stock across eBay and Amazon, thus ensuring we don't oversell at any point.
Yes, there are a number of software companies etc that can do that for us, but these guys seemed to care more about us as a business. Their support has been some of the best I have ever come across and invaluable to us in growing our business using inventory software.
It also has a good interface in that it looks good and, to me, this always makes things easier to use. It doesn't seem to hide certain features or functions like other systems and, as I said, is just easy to use.
I would recommend Expandly to anyone looking for stock control software which also aides in listing and shipping products across a number of channels.