Instruct: Classify an Amazon review as either positive or negative.
Query: Good but a little outdated

I don't know how many of these businesses were affected by the current economy but most of the applicable businesses have closed or if you do more in-depth research, reviews are mixed regarding payment or overall operation.If you must buy this book, do not part with more than half the amount of $ you are not likely to miss (ex. $1-$5 before shipping.