Online shop for baby/childrenwear 2nd hand online (eshop) business development

A business and Market research on the profitability of the newborn, baby and childrenwear retail market. Showing worldwide statistics but specifically in the US and Mexico of how profitable an e-shop of second hand ready to wear products( of baby, children wear) Would succeed.create an online outlet for 2nd hand baby clothes, since babys grow so fast and they can wear clothes maybe 2 or 3 times only before they change size. Of course on a luxury/premium universe (bonpoint, baby dior, baby burberry amongst others).