She ended up over at Atari Age, and they walked her through the process to make sure no one ripped her (side sell, etc etc), and they also informed her to take better pics of Stadium Events to maximize how much she made.
She mentioned that she found them in either a garage sale, estate sale, or thrift store, cause she frequents those places often. She's got almost three sheds full of stuff to sell on Ebay. She said she remembers paying $2.00 for that Stadium Events.