I've found it difficult to find a nice, quick healthy lunch in Concord. Upon recommendations from friends, I recently picked up a sandwich at the Amazon Cafe in the Steeplegate mall. Though you would not guess this from looking at the restaurant, the food is excellent. I had a fantastic sandwich - which is not always easy to find. I am told they have great salads and fruit smoothies as well. The service was fast and friendly, and it is easy to customize your order. The best thing about it, though, might have been the price. Just $3.99 for a full sandwich, just over $5 when I added chips (it's a healthy place, so they are mostly baked, though I added doritos) and a drink. Definitely worth a try, and I will be back!