What are the pros and cons of starting a Ebay Store?

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I occasionally sell stuff on Ebay, and I was thinking maybe I should get a store. I have roughly 10 items right now that I can place in the store. I can have roughly 5 to 10 items a week to list in the store. I sometimes purchase stuff at garage sale and resell, plus I do crafting. What are the advantages and disadvantages of having a store? Do you think if I list 50 items a month that should be sufficient?