I just happen to be going through all of my fish stuff. These are the filters I have extra. Thought I would list the canister ones too, just in case.
HOB Filters
4 - Penguin 330 with bio wheels. $20 ea (all 4 for $70) includes some new cartridges
1 - Whisper 30-60, $15
1 - Topfin 60, $15
1 - Aqua-Tech 30-60, $15
1 - Topfin 10, $5 (with free cartridges)
Canister Filters
2 - Magnum 350 Canister filters (one impeller noisy but still works, the other fine) includes hoses, disconnects, intakes, outputs, 3 carbon containers, 2 filter sleeves, gravel vac, extra top, extra assorted o rings, 2 motors, everything for 2 filters plus extras! - $80
1 - Vortex Diatom Filter XL - complete filter system plus an almost full 5 lb box of diatom powder. - $70
1 - Vortex Diatom Filter D-1 - complete filter system plus some carbon powder (motor does run a bit warm). - $30
Prices do not include shipping.