Honestly I think, if the seller don't really feel like he want to sell the item to the threadstarter because he is just to fussy, he should just tell him earlier. Cause before the other potential buyer step in by the 27th he should be alarmed well enough that dealing with the threadstarter might be bothersome for him (referring to post no 4,5 &8).

This is not to say that the threadstarter is right. Why? Because he himself warranted the termination of the deal by using this sentence ---> " If this thing become too complicated, just forget about it!" (May be he doesn't really mean it but you said it dude).

Lesson learned is both parties really should be carefull with their words since certain words might be interpreted differently by the other side.