Fellow's I hate to kick a big ole hole in your bench theory, but your bigtime wrong, here is an example starring you in the face, and I've got tons more than this one, http://cgi.ebay.com/Ludwig-Limited-Edition-Engraved-Black-Beauty-Snare-Drum-/330563087055?pt=LH_DefaultDomain_0&hash=item4cf7186acf I had a craviotto oak Limited edition, bought it for $350.00 sold it for $950.00 to a well know vintage collector, who even stated this is money in the bank. have you priced an early Brady snare drum lately? other examples, Noble Cooley Zildjian snare drum's, Paiste Spirit of 2002 snare drums, craviotto lake superior snare drums, I could keep this up for quite awhile. price any of these purchase price with the price you'll pay now??
Now- the snares with shells made by cymbal makers? Those have nowhere to go but up. But those were truly limited editions, unlike what Banjo Center is selling as a "limited edition". Because there is a minimal chance of those EVER being made again, they are pretty desirable for collectors. And if they are turned out like cat food later, the older versions will be EXTREMELY valuable.
Also, I have noticed that snare drums are so much more collectable than drum kits (just an observation). G.E. Smith has an impressive number of snare drums. But I am a noobie in the vintage drum game, not so much in the vintage guitar game.
But in the end, we have no idea what is going to be highly desired in the future. What you named is probably going to appreciate at the rate of inflation if not more, which is really not a bad thing. The latest Joey Jordison Limited Edition, #--- of 10,000,000 crap-over-cardboard (COC) drum kit? Not so much.