I'm sorry I can't lower the number of days. I like to plan all my auctions so they end at the same time because I am disabled and can only get to the post office once a week and time it for my check to come too. Thanks for looking though. Fanned ya!
If you print your labels online, you can request the post office to pick up your packages at your home. Makes things much easier for disabled people. I use it all the time!