Where I can find information on both online sales as the retail footwear and for free?

I need information on ceramic industry of the foot in the United States, the information / statistics on sales shoes online and in stores in the last 2 to 5 years, different age groups that purchases of shoes and how they buy and where (online or in local stores), the average number of consumer return of foot when you buy online as I suppose the shop in the past 2 to 5 years and cost the company incurred when an item is returned. which has the largest Internet stores Foot income consumption and lose it, do they face you. Also the number of local consumer products companies have their own websites foot. I have to show the lost that local shops foot ceramic face from Internet sales. Does anyone out there know where I can find that information / satistics for free?

Google will help

KEEN Sales Rep @ Western Winter Sports Tradeshow