I was thinking today, I know, I know, an unusual and painfull occurrance in my world

anyway I was thinking about the kms we put on bikes, and how this reflects in peoploes minds at purchase time.
So heres the question. at what point, do kms matter. heres the scenario:
two bikes, the same year, make and model. Both NZ new. Both have full service history. Both have been looked after exceptionally well, and neither have been raced, thrashed or binned. In fact, every aspect of the bikes is idenetical, except one thing. the trip meter.
The asking price on both bikes is the same.
The question is, how big of a difference in travelled kms on the bike, before you would start to favour one over the other?
For me, its probably around the 15k mark. Im not worried about slightly higher kays bikes, but I know some poeple who think 30k on a sportsbike is really high

and I know people that think any bike which has travelled less than 100k is barely run in

what say you? how big (or small) of a difference in kays would lead ou to one bike over the other?
Oh, and as for the 'hot kays vs cold kays debate', lets say both bikes have only ever been on long rides, minimum of 200km.
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