A little over $8 million changed hands in this week's SecondMarket Facebook shares auction. And the price surged $1.50 per share, or about 5%, over last week's record price of $30/share. 257,422 shares were bought and sold. That values Facebook, with roughly 2.5 billion shares outstanding, at $78.75 billion. Or, 17 Twitters and change. The confidential (lol) email and part of the attached report is below, and we'll soon be updating our Facebook valuation chart .