I was told it is fine to buy most things 2nd hand but car seats should be bought new as you just don't know if they have been involved in an accident. Apparently they can be cracked but you won't be able to see it?? That's what I've been told anyway. We bought ours at target when they were half price so got 2 top of the range for $300. I just trawl through all the catalogues until everything I want is on sale..

Hope this helps

Hugs Bel