I think using the multli platform sites such as eBay and Amazon is a smart way to start and you can make a lot more from your SaleHoo Store by doing this. While it's hard to find ways to market your actual store itself on these sites, you can target traffic and direct them to your site at every opportunity, helping you build traffic there.
For example, set up a monthly newsletter, offer a good deal for people to sign up to your eBay news letter and then that gives you traffic to target. Each time you make a sale, ensure you say thank you and always include your SaleHoo Store URL and so on. You may have to find a way of doint that in code, because the eBay system may well chop it out on you.
The thing to remember is that your SaleHoo Store offers you plenty of potential, you have to market it well to drive traffic to it.