Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Rip Off

My son received this toy as a gift. I made sure I had the 9 voltz battery so he could play with it with his friends. I had never heard of that kind of battery pack before or even that battery packs existed. Most toys take AA's. When I saw the marking on the front of the box I thought it was a name for something the toy did not a battery it needed...and $36.00 for batteries!!! I won't by tis brand again either. Great toy but rip off with the batteries! Needless to say, my son couldn't play with his toy on his birthday. We even went out to buy them but it seems the only place that had them was Toys R Us so far. Not again.