As far as vintage, cymbal price increases make sense to me: demand for old vintage jazz cymbals. It's hard to really find the magic in new cymbals that those vintage cymbals have; modern companies keep trying to copy it but not quite succeeding. You really want THAT sound then go find a vintage cymbal. Demand exceeds supply. A bit different than drums. With drums you have a lot more to assess: shell, bearing edges, lugs, rods, rims, and on snare the strainer. So yeah I can see why vintage cymbals would continue to appreciate while drums remain static or are depreciating. Seems a sellers market for vintage cymbals and buyers market for drums.