A little more practical than the 35 shells all 12x15 size!
It seems like buyers would have to somehow "meet" each other and do some shell trading, then we'd see a boatload of drum kits appear.
OR, you simply corner the market on one size and help everyone complete their kit!!
I got an email from Julien's about the sale a month or so ago (I guess I'm on their mailing list now because I bought that Ringo book from them a few months back). I glanced at the auctions back then but purposely avoided looking again because I already have too many irons in the fire to contemplate starting any more "projects". Still...now I kind of regret not looking because I would have loved to get one of those finished Leedy snares.