These two Jack Skellington Snowglobes are currently available at the Disney-Hollywood Studios.
The above snowglobe is $40 and has been around for awhile but this is the first time I've seen one in person. I believe it originally was available online for 79.95. There is a series of them featuring different Nightmare characters but I think this is the only one still being made.
The snowglobe below was originally available in the Disney Catalog in 2001 as part of a 2 globe set for $19.95. It is now available in the theme parks for 12.95.
It seems it is going to get more and more difficult to date the various snowglobes as long as they keep reissueing old designs.