Looking for a cheap lunch idea? Right now Grub Hub is offering a $12 FREE Credit when you sign up with THIS LINK . Check it out Grub Hub is a food delivery service. If the Grub Hub delivery service is available in your location, that means you can get lunch for FREE! GO HERE and sign up, you should see the free $12 credit code. Copy the code and use it at checkout. Select a restaurant and order at least $15 worth of food. Pay with a credit card or Paypal. Get a co-worker to go in with you and pay the difference so you get your lunch totally free if you do have it delivered. Here's a few tips to get lunch FREE – or super cheap! Look for places that offer free pick up or free delivery to save the $4-$5 delivery fee. You can do this once per email address – create a new account to use again!