I just opened my account on webstore in late July. I had my first two sales in early October. This website is more primitive then eBay and you can only have up to four pictures. But you can easily host pictures on a photo hosting site like imgur.com and have them embedded in the description.
Other issue is that nobody really knows about this website so YOU have to drive your own traffic. I also sell on eBay but I send out business cards to attract buyers. This website is perfect as a secondary sales channel for repeat customers as there are no sellers fees and the buyers can use guest checkout if you setup you account to accept them. If you sell you items on ebay and at the same time sell more of them on webstore for 10% or whatever less (since you save 10% on not having seller fees) you will get repeat buyers that want to buy more. YOU just have to advertise with every item you sell.