[RWhisenand]

I think you need to consider how much you need to make, are you comfortable already? Do you need this income to make ends meet? Are you semi retired and looking for a hobby business? Where would this be located? What are the margins on the merchandise you wish to sell? Is your target demographic strong in your area, and do they have disposable income? What are you going to offer to beat CBid or Amazon?

Do some hard marketing research, and avoid cherry picking your results.