Over the last 5 years, a client has bought 100 shares of ABC Mutual Fund each year in a taxable account and has elected to have dividends and capital gains automatically reinvested in additional fund shares. The aggregate cost of the 500 purchased shares is $6,215. In addition, over these 5 years, the customer has bought 100 additional shares through dividend reinvestment at an aggregate cost of $1,572. At the end of the 5th year, the client's statement shows that the customer owns 600 shares at an aggregate market value of $8,934. If the client redeems 100 of the shares, the average cost basis per share is .