Seems like a valid point, but there are always people who come late to the party. For example, as of a year ago, my jazz collection consisted of a few Miles albums, and a few Coltrane albums. Didn't know that Rollins, Shorter, Mobley, Morgan, etc. existed.
Then through this board, the Hoffman forum, and other boards, I learned of Blue Note, Verve, and so many of the amazing jazz artists out there. Needless to say, I now own about 10 big Mosaic sets, about 10 selects, many Miles and Coltrane boxsets, a ton of Blue Note albums, etc.
Anyway, my point is, if the JJ set went OOP a year and a half ago, I wouldn't own it. Just like all of the other Mosaic sets that are OOP and which I don't own. But since I got in at the right time to own the JJ set, amongst others, it is a part of my collection. But there are always new people being turned on to jazz, and they're a ready market for the out-of-print sets that many of you probably took for granted when you were buying them up at regular prices. Me personally, I won't pay e-bay prices for OOP Mosaic sets. But I'm upset I don't have some of them in my collection.