I have a friend who is one of those peeps who wears gloves and hands out samples for Costco. The last time I was in there, she was doing a demo of these lovely bars. They have 3 kinds of fruits, three kinds of nuts and three kinds of seeds.
There are four varieties and I am not sure which one I tried, but they are really tasty.
This is the price for 20 bars, which breaks down to 80 cents a piece. Not far from the price of a standard candy bar (in fact I have seen candy bars for that price and more). And yes, they are gluten free. :)