Definitely worth the 30 minutes.... my rate for walking is now $200/hour :) There were 3 of these gift cards and 2 for Bombas socks just for our office... I figured not that many people would enter and that I would have a good chance.
I've also been cleaning up at the weekly online trivia which awards $25 GrubHub gift cards to the first three spots.... I'm saving them up to order something extravagant. I'm afraid they are going to ban me from contests pretty soon!