Identify the market size of the consumer-to-consumer e-commerce market in Spain including a breakdown by vertical: fashion/clothing/accessories, movies/books/music, home & garden, baby & child, sports & leisure, cell phones & accessories, collectibles & art, computers & electronics, games & consoles, motor vehicles, and other non-perishable goods. In addition, identify the market size of the small business e-commerce market in Spain including a breakdown by vertical: fashion/clothing/accessories, movies/books/music, home & garden, baby & child, sports & leisure, cell phones & accessories, collectibles & art, computers & electronics, games & consoles, motor vehicles, and other non-perishable goods. Market size should be expressed in revenue and (if available) number of buyers and number of sellers.