To view your watch-list or only the items you're bidding on, click the Account button at the top green menu bar at the top of any page.  At the close of the auction, items will drop off of the first page as they close and items on later pages will flow through to the first page.  If you stay on the first page of the catalog you can see the entire auction close from the first page.

All payments for items purchased are due within 7 days of the close of the auction, no exceptions.