It depends on your other expenses and debts. $750 is between 1/4 and 1/3 of your pre-tax income, which is in line with what is "safe" to spend. Of course, if you add to that cable, cell phone, car payment, car insurance, etc., etc., etc. then maybe that is too much. You can estimate your after-tax or net income and add together all of your known expenses to see where to sit.