In a filing with the SEC, Virgin Mobile (NYSE: VM) detailed the terms of its coming IPO, announced that it plans to sell 25.6 million shares at a price between $15-$17, netting the company $375.6 million after underwriting expenses.  This is slightly above the company’s previous estimate of $332.6 million back in July.  As previously stated, most of this money will be distributed to co-owner Sprint (NYSE: S) Nextel, as a loan repayment and as payment for the company’s stake.  Filing.