For me who grew up on German candy, a store full of American candy is like an adventure park. I could try a lot of things I only read about online, and also get my fix of some candy that I was lucky to try and fall in love with before (yet bought for about five times the time in Germany). It is also always a big hit with my family when I bring back some special sweets after visiting Gilbert. The store has a lot of retro candy, special editions and more 'exotic' candy, like cheese dusted worms and lollipops with ants, or spicy pepper mango candy from Mexico, as well as several European candies. Many things are also available in bulk. The prizes are reasonable in my opinion. I don't know about the prizes for 'standard' candy that you can also get at Wal-Mart, but the special candy is not expensive at all.
I can just say, give this store a try, it is well worth it!