The weight is 28oz which is great for a pack with a frame made from durable materials (compare that to a frameless golite pack for example).
The dimensions are about 7×11 on the bottom and a total of 33 inches high. So I'm guessing without the whole extension collar you have around 2000-2500 cubic inches to work with. My gear fit nicely inside the HMG Porter so we used similar dimensions for this pack.
The whole point of this pack was to have a pack that was
1. Rugged
2. Big enough for a thru-hike but that compressed down so it wasn't overkill for a weekend hike.
3. Sturdy enough to haul 35-40 pounds but not so heavy that it was overkill for a weekend UL hike.
I think this pack nails all of those. It should be my go to pack for pretty much any trip except a few weekend SUL trips.
Chris' pricing depends on materials, number of pockets etc. but overall its very reasonable. I would have paid basically the same price if I'd bought a couple of popular cottage gear packs that are NOT custom made to my exact specifications.