Ebay stores are great if you have alot of items you wish to sell. But remember that you must have active listings to draw attention to your store. You can also invest in google adwords to bring people to your store. Listing prices are lower for stores but they also sell much less product as a auction would. I have sold over 3000 items on my 3 ebay accounts but I think ive only sold about 20 store items. So if you advertise as much as you can your store will be much more successfull.