the numbers looks correct

All the numbers together equal $145000, why do you think your agent tricked you? If the bank needs the net of $131680, the price usually should be more than that due to the closing cost and commission.

In most cases, short sales are sold AS IS, which means no one would repair anything for you. But, sometimes, you can request. In some states, you can say you cannot get the loan approved because the house is not at "living condition". For the best interest of the bank itself, it would agree for some repair credit.