They're fairly cheap @ jazzmessengers.com, or via marketplace vendors on sites such as priceminister.com
I'm a big fan of the series ... striving to have all of it, but in the past few years I couldn't alyways quite keep up the pace.
The sub-series with the Jazz Live Trio is very much worth your attention, too! And obvously the new Q with Nat Cole is gorgeous! Mostly, they're not playing together, and the Q material, unlike the early TCB release of a Lausanne set, is not part of the cheapo PD 4CD Q live "Complete 1960 European Concerts" set (which I did buy ... there's another disc in it that was out on Q's Quest, but I guess ripping of Q a bit is rather okay, he's had it coming )