Actually there was a trade like that which happened a few days ago at our local Buy/Sell/Thread, and that's what made me write my post
. Price of MISB 89 Batmobiles here have gone down significantly, from retailers to owners who bought it but have never displayed it. The lowest offers are at $570. QS001 on the other hand, seems to be one of the sought-after figures here (I assume it was because of the lack of faith that the figure would turn out great, not too many pre-ordered), and the regular version can be had for a minimum of $550.
Apart from size/space issues, there's not as much 89 Batman fans here as there are who dig Nolan Batman and I see that as one major factor behind the slow sales of this item. Even DX09 can be bought here brand new for below $200, DX 08 for $150, and DX14 are being given away as raffle prizes