I mentioned this awhile back but quite a few out of print Mosaic black boxes as well as the 3CD Select series are available (sans the booklet of course) digitally under the moniker "Capitol Vaults."

The covers look the same:



is actually this ...



$7.99! Helluva deal!

https://www.amazon.com/dp/B003VGE2WW/?tag=imwan-20

So search for any release with "Capitol Vaults" in the title. Saw quite a few Blue Notes. Verve is also doing this as well.

Moved this to Collector's Corner since it's about digital releases. Bob's post originally mentioned iTunes, but this (and others in the same series) aren't iTunes exclusives, they're at Amazon too. I've included a link for the Dexter Gordon release above.