Thankfully , My auction was on after like 4 hours.... I was afraid, because it was a niche product that I used to sell with old account... I guess it's fine...
I may be wrong but I don't think there's any real rhyme or reason other than maybe the time of day you list, or the day of course. I've found weekend listings can take longer. Weekday listings seem to come up much faster. For example I listed one item on a Sunday and it took nearly 3 hours to appear. I listed the same item later on a weekday and it appeared almost immediately. <shrug>
Buy it now listing with new account 
