Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Did not realise this was an international seller

Being international seller it took a good 4 weeks to arrive. Book was as good as new only for a fold mark in the back cover page running vertically down the whole cover. Just started reading. Book does give a good insight for those who want to understand what can go wrong using STL, Can take you from a beginner level to an advanced level, if not expert level.