My sister is currently 31 weeks pregnant with her first DC. She and her DP have bought a second-hand pram on eBay which came with a used car seat, which they are planning to use. He runs his own fairly successful business and she earns a good wage and plans to return full-time so they can easily afford a new one. I asked how would she know it hadn't been in an accident and she replied that she'd be able to tell.
She is also still smoking around 15 a day. Mum confronted her about this yesterday. Her reply was that she knows the baby is fine because she can feel it kicking! (as if that's the only indication of a healthy baby?!)