(2) High match 13.5 yuan, low match 8.5 yuan.

(3) The commission fee for the purchase is 0.0075 *1000 *10 =10075 yuan (of course, there are other specific circumstances such as stamp duty, commission and transfer fees, which were calculated on the basis of the purchase price plus commission just now).

On Friday, the stock price rose by +2.5, the selling price 1 1 yuan, and the selling commission11000 * 0.0075 = 82.5 yuan.

The total selling income is1000 *1-75-82.5 =10842.5 yuan.

The expenses in the real transaction include entrustment fee, commission, transfer fees, stamp duty, transfer custody fee, etc. Own Baidu. There is a commission for buying and selling, and the commission money goes to the securities company where the account is opened.