From your reports, I had assumed that the Light Science and Magic books were running in short supply. I talked to Moishe at MPEX today, and he confirmed that (a) they have pretty much dried up, and (b) are not expected back until early August.
Moishe scrounged about 25
of them by
sleeping with the Focal Press marketing director
working the phones today. So that's a few, anyway. But they should be back in supply in about 5 weeks.UPDATE: Michael tells us in the comments that Amazon has gotten some back in since this post was written, too. Cool beans.