I got 1 pack and 1 head for like 1300 from
B&H because I was a member of NAPP. Special discount. I can fit a pack+head+cable+3 portrait prime lenses in my Think Tank Retrospective 20 with no problem and it not be ridiculously heavy (my not-so-buff female assistant carries it while I shoot.)
It is an investment, but the light it produces is incredible.
One light Quadra SOOC:
My art director on this shoot wanted her to fade into black, which is why there was no fill or rim. But I think it really represents what a single quadra can do quite well.