That game is really easy to find sealed. It is so easy to find, it often gets mistaken as a Majesco rerelease. However, it was just a lot of old standard stock.
But $1.20 seems about right if not a little high. Most copies I've picked up have been $1 or less. It has several things going against it 1) Game Gear 2) Sports 3) Trivia. Basically every part of its name is poison to gamers.
I do not have a clue on how they are shipping them though.