Corwin we are speaking about people writting 150k instead of 1500k
Its not about complaining because someone sold something 290 k whereas he could sell it 360k. This is marketting that no rule should apply to that. You are a good trader or your are not.
What Meow want to rule is people exploiting the fact that other people can make stupid error like forgetting a zero, or selling for 10 k gold a +1 heirloom because they forget to put which heirloom they wanted in exchange
What we are speaking off, at least this is how I understand the intention of developers, is to create a system that works. With new market options come new possibilities for abuse. There is a possibility that all the cases wont be as clear cut as they use to be.
I suggested this in order to preserve some security in those cases, so that people could be sure that their transactions are secure after certain amount of time has passed and to prevent those simple "change of heart" complaints. Anyway, I am sure that it can't hurt.
And for the record, I never scammed anybody, never bought extra cheap items and this suggestion has nothing to do with me personally.