$100!!! crikey. i think we paid about $65 for ours from the baby shop? Try ebay, people sell them on there, and they last for ages, I got one for DD1 as a baby and its still going strong. They only really use it for a little while, then it goes in the cupboard.

However, all my kids still fit in it (even the 4.5 year old) so mine gets put away cos they fight over it otherwise.