I have currently entered about a thousand items into our site and the boss has decided that he'd like customers to be able to sort by age category as well. The solution that was come up with was to add new categories for each of the age ranges and then copy an item into the appropriate category.

Things is, there are some categories already in the system with hundreds of items that would all be copied to the say "Ages 3-4" category. Is there a way to copy batches of them at a time or does it have to go item by item?