Sorry Jen but don't let yourself be sucked in by these mags they are all alike buy the first copy for $3.95 and end up paying something like $800 for an item that can come ready made for far less.
I remember seeing one recently to do with trains and you could make a model of the Flying Scotsman and it would work our the same $$$. In fact everyone of these type of magazines usually comes in around 52 editions.
These solar system models are also known as Orrery's
You might want to look at this site for some really professional models
http://www.orrerymaker.com/catalogue/jones.htm
or a cheaper Orrery at this site
http://www.1worldglobes.com/Teachingaids/orrery.htm
Cheers