Since the tax is taken out after what if you put something up in auction what if you don't have enough to cover tax when it sells? for example you go hit a mob, have to do repairs, and don't have enough for tax when the lot sells. Will the item still sell and the tax be deducted from the silver/gold you just got or will the lot be rendered invalid?

And if the auction can only be for 10 hours and can't be changed why did I just put up 2 things that say 12 hrs not 10?