Question: Near the end, when Scrooge is in the toy shop buying lots of toys, the shopkeeper has a shocked look on his face throughout, especially at the bit where Scrooge asks how much all the things are all together. Is it shock because Scrooge is suddenly nice, shock because Scrooge is buying up most of the shop and he's got to add it all up in his head quick, or both?
Answer: Most likely because he's buying the shop's entire inventory. That would be shocking enough to explain his reaction.