People wander into your Shop in the mall. Others have what you have, be it clothes, jewellery, shoes, electronics, books, etc. They come to your Shop because you are in the Shops Directory, not necessarily because they know you have exactly what they want.

You have to entice them to buy MORE than the one thing they were looking for that you happened to be selling. So you entice them by putting your expensive items up on mannequins (ie: pictures with links in your auctions). You entice them by asking them as they complete the purchase, whether they need socks or earrings or lipgloss - something they did NOT come in for (ie: merchandising relationships).

Those are things people don't see when they visit the Shops Directory. You have to internally advertise to them. That's what having a Shop is all about!