User Activity

I made an error when listing the cost of postage. Decimal point in wrong place! In edit listing I cant change it. Is there a solution or will I have to end the listing and relist?
A customer asked if I would change the selling formay from online auction to fixed price. I advised that this is not allowable. Could I instead reduce the duration of the auction. There are no bids to date and there are 6+ days to go.