Like many big, expensive items I needed for my darkroom, the Regal/Arkay film drying cabinet I use was almost free. I have found that if you keep your eyes and ears open these kind of things become available, depending on how far you're willing to drive. The key is patience. Before I had one, I had good luck hanging roll film in a shower stall and 8x10 negs on a line above my sink. I really like the convenience of this film cabinet. It has good seals, so the dust is kept out. It has a filter. I can do warm, fan-driven air, or just let them dry on their own without help. I also hang my freshly coated palladium prints in it to dry before exposure.
Neal