Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good software, but Buyer Beware

It surprises me to see a *used* copy of AutoCAD for sale on Amazon, considering that AutoCAD is not software that you can usually transfer "ownership" of. The license for use (not "ownership") is granted to the original user only; it is transferrable to another party only if Autodesk permits it, and they rarely permit it. If this copy had ever been registered it probably can't be used legally by anyone else. A prospective purchaser better check that out, or they're spending a ton of money for what would essentially be pirated software. If it's a copy that's never been registered, no problem, but find out before you buy.