Instruct: Classify Amazon reviews into positive or negative sentiment
Query: BEWARE!

This is a really great movie, unavailable on DVD. I'm sure that's why there seem to many cheap copies being sold on Amazon. This tape is valued at $50. If you see it for sale at less than $40, be sure to read the description carefully. Bootleggers rarely use the words 'authentic' or 'original'. Also beware if all of the seller's titles come with 'artwork cut to fit hardcase'. You should email the seller specifically to ask whether their tape is authentic or a copy. Click on 'customer images' to see how to identify a bootleg so you don't get ripped off like I was!