Yes, this is a very amazing treat! It's just plain ADORABLE to see your hamster eat the popcorn off the cob, or just the corn itself! As you said, it's just a treat and should not be fed over 30 minutes a day if your hamster is on going at it. If your hamster ignores it, you can keep it in there for longer if you want. I usually feed this to Peanut every 3 days 10 minutes each.
To answer your question, yes, very good buy!