I have one that was brand new from Mamas&Papas bought in 2008. But it has been slept in by dd1, then two years later ds1 and then lent to my sister-in-law and slept in by her ds. In between time it's been stored under the bed and I can wash the mattress thing that unzips.
DD2 arriving in a month. Would you fork out £50 for a new one in case the fact it's 10 years old increases SIDS risk? Would really appreciate views.