Actually I believe you need at least 15 positive seller transactions under your belt before the GIN option will be available for you to offer. You'll get there. It's happens pretty quickly when you really get involved in this. Fun Fun Fun!! Good luck!!
I would've done that, but once a bid has been placed, you can't change the auction. You can only add photos and downgrade the shipping to either a cheaper cost or to free shipping. Thanks anyway.