Ha... wasnt an attack on the beloved ACDC pinball... more a fact that as these games come to market, their 2nd hand price will be found. Wether the seller knows how to be nice or not makes no difference because at the end of the day a machine sells itself and all 2nd hand machines have their price range.
 A 2nd hand Pro isnt going to be worth $5K.. not if you can still buy new at under $6K.

As more of these machines come onto the market the price will drop.. it is now no different to any other pinball made before it, people buy, get bored with a title and flick.. simple.

One buyer makes multiple bids.. OK.. so he was prepared to pay more.. noone else in the whole of Australia was.. that says even more.

I reckon Pro ACDC will eventually end up being exchanged in the $3500-$4000 range

Considering Australia has been flooded with acdc pins I reckon 3.5-4k is about right for the pro.
Some sellers still trying to sell acdc le for ridiculous prices as well and they are not selling.
The hype has run it's course for sure on this title, only a matter of time until the le and premium models are selling cheaper as well.