You also can't use the GIN option until you've gotten your trusted seller badge. I think that's so you don't get short changed by other newbies who want to get your item for next to nothing. It's been my experience, the item goes for WAY more than they offer you for a GIN anyway. Or when they ask you to lower the number of days just for them, you're only hurting yourself. Seven days is plenty to allow more folks to see your item. But I tend to lose interest if an auction is longer as I am always looking for newly listed items. Best of luck to you! 8o)