Instruct: Classify Amazon reviews into positive or negative sentiment
Query: So disappointed

I bought this as a gift for my son, who loves this series. Sadly, like some others, the reverse side of the discs were blank; half the movie is missing. I ordered from Comp-U-Plus Rockland, for $18.10. Today it's $16.99. I'm going to try another vendor at about twice the price.I did contact Amazon by phone to register my displeasure with the way they post reviews. Their practice of lumping all reviews for a movie together makes it impossible to tell which seller is shipping defective discs. The seller I chose has a 97% positive rating and ships many kinds of products, and none of the recent feedback comments were about this movie. Order from them at your own risk.