R.P.
Hi...we bought new mattresses for each of our three kids when they were born. (Two of the cribs were hand-me-downs, but not the mattresses.) I'm a money-saver, but I felt more comfortable with a new matress for them rather than a hand-me-down. Also, crib mattresses really aren't too expensive. I'm sure you can find a relatively good one for a better price than you'd expect! Good luck!