No problem, always happy to help people avoid being extorted by unscrupulous operators.

Since you have time to kill in/around Greymouth, I'd suggest making time to head north to Punakaiki (home of the Pancake rocks & blowholes) if you enjoy watching large waves battering themselves against interesting rock formations, the rougher the seas are the better it is. Take sunscreen, and lunch/refreshments with you. (typical tourist trap cafes.. overpriced and poor quality food)