Andrew, it has a 3-way toggle just as you describe - normal, rough road and unlocked. The price is $60 as shown in the first post. I'll PM my a/c details when I have a couple of them ready - easier to make 2 at the same time rather than have to work out how I did the last one each time.
You must have had a hand in fixing "my" lane recently because its a racetrack now, until it rains again at least.

