There shouldn't be, but sometimes there is and this is where a vendor's customer service comes into play. I buy 10-15 books every year and almost all of them I

There shouldn't be, but sometimes there is and this is where a vendor's customer service comes into play. I buy 10-15 books every year and almost all of them I order from the same place because they are reliable and provide great customer service when something does go wrong. Books are cheap enough and I don't buy that many so I'm not really very price sensitive.