To help save money with the new baby, you might think about re-using your crib mattress. Even though the United States does not recognize chemicals in mattresses as being the possible cause of SIDS (Sudden Infant Death Syndrome), I believe there is a link and this should be taken into consideration when deciding whether or not to re-use a mattress.
If you have an organic crib mattress, you should have no worries with re-using the mattress. If you have a non-organic mattress, then take into consideration the possibility that it contains harmful chemicals that have already started to seep from the mattress through its use. You can buy covers that are designed to keep the harmful chemicals away from your baby, so it would be safe to re-use a mattress. Otherwise I would recommend not re-using the mattress.






