Categories: A Greenhorn Question on Strategy (Not Code)

Question

Im having an issue in my category set-up logic

Let's say I sell new/used (including Vintage) Drums/Drum Parts wherein a user can search by new, used or by individual part. So let's say they choose to search by individual part on Cymbals. The search results page should then display a listing of Cymbals should also be grouped by new/used? Right?

So, in setting up my categories I'm coming up with this

New

• Drum Sets
• Cymbals
• Toms

Used

• Drum Sets
• Cymbals
• Toms

But this seems redundant to me. Can I not achieve my objective WITHOUT all this duplication? So before I go hacking away at this I thought I would get a few pointers from my peers.

Please advise.