Mary Thanes, a college student is contemplating the following options for her 3-month summer break:
(1) Take a summer course which will cost $700 and work half-time making $1,000 per month.
(2) Work full time at the local dinner making $2,000 per month.
(3) Take the summer class at a cost of $700 and not work during the summer.
Mary’s incremental profit or loss if she chooses option 1 over option 2 would be: