Could well be a misprint DM never put down to malice what can be pure error.
Someone I know advertised her Staffie pups in a well know dog paper, her price £200 (I know this was a while ago) the price the paper put in £1200 - pure error but she had no phone calls.
Contact them and ask - them to confirm the price the worst that can happen is you will be certain you don't want to go further. And the good point in theri favour they have realised early on that the "baby" is too rough, not everyone realise how delicate a kitten is till they see the children in action with it.