It matters for the s ake of increasing the information available about the market for startups. Granted, startups span a huge space, but there's a real dearth of pricing information overall.
http://finance.wharton.upenn.edu/~allenf/download/Vita/roleo...
http://www.google.com/search?hl=en&q=efficient%20market
http://www.google.com/search?hl=en&q=role%20of%20informa...