FREE: $50.00 eBay gift card! Or winners choice! GIN Get's $100+

No problem hun! GIN is short for Get It Now. Take this auction for example, it still has a few days left but if someone wanted to have this gift card right now
They can click the GIN button pay the set amount and end the auction immediately. Making them the winner. ;) hope that help.

As far as shipping is concerned. You have two options when listing a auction. You can either input winner pays shipping and the person with the ending bid has to pay for shipping cost. Whether it be exact, flat rate or a set price you have in mind. These auctions never make more then the ones with free shipping so that's something for you to consider. Also, being a new user people will be hesitant to bid on your auctions if it's winner pays shipping due to the high volume of scammers on Listia.
Then there is free shipping and that is unconditional. You can not list something with free shipping then state in description or comments that you will not ship if the bids don't exceed a certain amount. Although if you verify yourself and start off with smaller auctions until you have a certain amount of good feedback you will do just fine. A word of advice? Save ALL your good and or high end items until you are a trusted seller or have your seller wings. We all start off trying to make quick credits and list great stuff but people will just not spend as much as they would had you had good feedback ratings. Always be honest, answer your comments, list your items with a piece of paper with your Listia name written on it so people know the item IS in YOUR possession and just have fun. I would recommend reading the Listia RULES and guidelines and familiarize yourself with them. :) good luck on Listia and I hope to see you making it big
On Listia soon.