Anyone paying those prices is insane and hasn't shopped around.

If the prices are very expensive in one state, then simply buy from another state like QLD where prices are dramatically cheaper than all other states.  Too many people getting ripped off who are newbie buyers .
After you have purchased over 50 DMD titles, you certainly don't pay top dollar or over the Mark, if anything, completely the opposite for excellent minty examples.

Shop around a lot before spending is my advice to anyone.