Normally when you list an item on eBay you get to choose one category to list your item in, but if you
choose to add the Two Categories listing upgrade to your auction you can choose to list your item in
two different categories simultaneously. The Two Categories listing upgrade does not have a fixed cost
but rather doubles your regular insertion and listing upgrade fees. However, the fees for the following listing
upgrades are not doubled: Scheduled Listing,
Home Page Featured, and
Motors Home Page Featured. Here is an example of what
the Two Categories listing upgrade looks like in a real world listing...