Instruct: Classify the given review into positive or negative sentiment.
Query: Once you figure out the battery issue, it's a bargain

We bought this used from my niece, along with a train table. Actually, she just threw it in and said it never worked. I looked it up here just to see how to put the track together. Lo and behold, I read the reviews, got some Rayovac batteries and voila! Works like a dream. My 2 1/2 year old twin boys LOVE it. (My niece laughed when I told her about it.)