Bought the York C500 second hand for $20.00 so it was a huge bargain price.
Yes the seat is hard but you do get used to it after a fair amount of persistence. All the seats on push bikes or exercise bikes are about the same anyway in my experience.
My partner uses it to burn calories & I use it to strengthen the muscles around my knee joints to prolong a knee replacement which is inevitable on my right knee in the future.
Very happy with the bike for what we intended to use it for.