There are many different types of Pitts S1.
Neither of the two you mention is 'cheap' if the particular specification and circumstances of the aeroplanes are taken into account. I think I know the machines you mention and if so they strike me as being sensible asking prices.
They are not impossible to land at all and anyone with tailwheel experience should convert quite quickly. The reputation comes from the fact that they land faster than a cub pilot say, is used to and below about 50 they need more attention with the feet than some other aeroplanes. Also helps to keep the stick in the right place during roll out.