New filters (does anyone actually sell used filters?). I only want to sell them as a pack of 3. They go for $34.75 each on Aircraft Spruce (plus tax and shipping). I obviously won't be charging tax and will split the shipping. If you have a legitimate online source that sells it for less then I will match that. Please also see my ad for the filter cutter that works on these filters.

We switched the whole fleet to challenger reusable filters and never looked back.