To run the costs are in line with other retractable, variable pitch prop aircraft. It's a Lycoming IO-360 engine, so pretty standard from that point of view.
To buy they're remarkably cheap, as they seem to be deeply unpopular in the UK - possibly because they have a bad reputation for operation on grass. As a guide, take the US book price and SUBTRACT the ferry costs.
I have one; it's a lovely aircraft, fantastic for touring, but there's no way anyone else is flying it
.