I just embarked on this escapade as well.
There's a
70 quart Coleman on amazon for a sliver under $40. With amazon prime I got that with free shipping. It comes out to a little under 2.4 cubic feet. I can vouch for the seal, it's pretty definitive.
I just (an hour ago) got my
1 pound of heartfelt 70% beads, which is rated for twice that volume, so they all went in (in a drawstring bag which I set in an empty cigar cask from J&R.)
$100 for the whole thing (including the
xikar hygrometer that's coming in a couple days.) As to how much it holds? I can't imagine. Several hundred cigars. Most of mine are loose, and in
tupperware trays (I cut 1" by 6" holes in the sides for air flow) that use space with remarkable inefficiency (until I get a job and can afford cedar.)
I'm going to post something more comprehensive later on. But I saw this thread and figured it'd be a good place to share some details.