Some tanks cost $240 each to test including full valve replacement but are rarely found under D1's as they weren't made in that size.
To properly answer the supposition that there was a rip-off one would need a detailed, itemised in-depth job sheet from the mechanic. Also a grilling from A Current Affair to expose any possibe rorting. Yes it's possible the job cost was justified but personally, I seriously doubt it. That is my personal opinion.
Yes I know there are competent mechanics out there, there must be, oh, at least twenty in each state of this, our glorious nation. And they can charge as much as they like, because they know they are the elites. You will know them by their labour rates. Or possibly not.

