Naturally, the latter offer a higher level of quality, and hence come with a more expensive price tag. You have the more affordable models which are made somewhere in Asia, and then you have guitars which are made in United States. Now, like most other guitar manufacturers, Dean has two categories of guitars that they offer. This allows you to properly determine the value of a guitar and its real age. They have been used for decades to diagnose when and where the guitar was manufactured.
Just like most products in the world, guitars are usually marked with a serial number of sorts.